Trigonometry: Using the Sine Ratio to find Unknown Angles

Authored by R Llewellyn Ball

Mathematics

9th - 11th Grade

CCSS covered

Used 4+ times

Trigonometry: Using the Sine Ratio to find Unknown Angles

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10 questions

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FILL IN THE BLANKS QUESTION

3 mins • 1 pt

Calculate, in degrees, the size of the marked unknown angle.

(a)

Answer explanation

$Sin\left(x\right)\ =\ \frac{Opp}{Hyp}$

$\sin\left(x\right)\ =\ \frac{3}{6}$

$x\ =\ \sin^{-1}\left(\frac{3}{6}\right)$

$x\ =\ 30\degree$

Tags

CCSS.HSG.SRT.C.6

FILL IN THE BLANKS QUESTION

3 mins • 1 pt

Calculate, in degrees, the size of the marked unknown angle.

Give your answer correct to 1 decimal place.

(a)

Answer explanation

$Sin\left(x\right)\ =\ \frac{Opp}{Hyp}$

$\sin\left(x\right)\ =\ \frac{8}{14}$

$x\ =\ \sin^{-1}\left(\frac{8}{14}\right)$

$x\ =\ 34.84990458$

$x\ =\ 34.8\degree\ \left(1\ dp\right)$

Tags

CCSS.HSG.SRT.C.8

FILL IN THE BLANKS QUESTION

3 mins • 1 pt

Calculate, in degrees, the size of the marked unknown angle.

Give your answer correct to 1 decimal place.

(a)

Answer explanation

$Sin\left(x\right)\ =\ \frac{Opp}{Hyp}$

$\sin\left(x\right)\ =\ \frac{10}{11}$

$x\ =\ \sin^{-1}\left(\frac{10}{11}\right)$

$x\ =65.38002267$

$x\ =\ 65.4\degree\ \left(1\ dp\right)$

Tags

CCSS.HSG.SRT.C.8

FILL IN THE BLANKS QUESTION

3 mins • 1 pt

Calculate, in degrees, the size of the marked unknown angle.

Give your answer correct to 1 decimal place.

(a)

Answer explanation

$Sin\left(x\right)\ =\ \frac{Opp}{Hyp}$

$\sin\left(x\right)\ =\ \frac{7}{12}$

$x\ =\ \sin^{-1}\left(\frac{7}{12}\right)$

$x\ =35.68533471$

$x\ =\ 35.7\degree\ \left(1\ dp\right)$

Tags

CCSS.HSG.SRT.C.8

FILL IN THE BLANKS QUESTION

3 mins • 1 pt

Calculate, in degrees, the size of the marked unknown angle.

Give your answer correct to 1 decimal place.

(a)

Answer explanation

$Sin\left(x\right)\ =\ \frac{Opp}{Hyp}$

$\sin\left(x\right)\ =\ \frac{6}{9}$

$x\ =\ \sin^{-1}\left(\frac{6}{9}\right)$

$x\ =41.8103149$

$x\ =\ 41.8\degree\ \left(1\ dp\right)$

Tags

CCSS.HSG.SRT.C.8

FILL IN THE BLANKS QUESTION

3 mins • 1 pt

Calculate, in degrees, the size of the marked unknown angle.

Give your answer correct to 1 decimal place.

(a)

Answer explanation

$Sin\left(x\right)\ =\ \frac{Opp}{Hyp}$

$\sin\left(x\right)\ =\ \frac{4}{11}$

$x\ =\ \sin^{-1}\left(\frac{4}{11}\right)$

$x\ =21.32368626$

$x\ =\ 21.3\degree\ \left(1\ dp\right)$

Tags

CCSS.HSG.SRT.C.8

FILL IN THE BLANKS QUESTION

3 mins • 1 pt

Calculate, in degrees, the size of the marked unknown angle.

Give your answer correct to 1 decimal place.

(a)

Answer explanation

$Sin\left(x\right)\ =\ \frac{Opp}{Hyp}$

$\sin\left(x\right)\ =\ \frac{3}{12}$

$x\ =\ \sin^{-1}\left(\frac{3}{12}\right)$

$x\ =14.47751219$

$x\ =\ 14.5\degree\ \left(1\ dp\right)$

Tags

CCSS.HSG.SRT.C.8

FILL IN THE BLANKS QUESTION

3 mins • 1 pt

Calculate, in degrees, the size of the marked unknown angle.

Give your answer correct to 1 decimal place.

(a)

Answer explanation

$Sin\left(x\right)\ =\ \frac{Opp}{Hyp}$

$\sin\left(x\right)\ =\ \frac{6.5}{9.6}$

$x\ =\ \sin^{-1}\left(\frac{6.5}{9.6}\right)$

$x\ =42.61614271$

$x\ =\ 42.6\degree\ \left(1\ dp\right)$

Tags

CCSS.HSG.SRT.C.8

FILL IN THE BLANKS QUESTION

3 mins • 1 pt

Calculate, in degrees, the size of the marked unknown angle.

Give your answer correct to 1 decimal place.

(a)

Answer explanation

$Sin\left(x\right)\ =\ \frac{Opp}{Hyp}$

$\sin\left(x\right)\ =\ \frac{1.8}{4.3}$

$x\ =\ \sin^{-1}\left(\frac{1.8}{4.3}\right)$

$x\ =24.74652459$

$x\ =\ 24.7\degree\ \left(1\ dp\right)$

Tags

CCSS.HSG.SRT.C.8

10.

FILL IN THE BLANKS QUESTION

3 mins • 1 pt

Calculate, in degrees, the size of the marked unknown angle.

Give your answer correct to 1 decimal place.

(a)

Answer explanation

$Sin\left(x\right)\ =\ \frac{Opp}{Hyp}$

$\sin\left(x\right)\ =\ \frac{5.5}{6}$

$x\ =\ \sin^{-1}\left(\frac{5.5}{6}\right)$

$x\ =66.44353569$

$x\ =\ 66.4\degree\ \left(1\ dp\right)$

Tags

CCSS.HSG.SRT.C.8

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Trigonometry: Using the Sine Ratio to find Unknown Angles

Calculate, in degrees, the size of the marked unknown angle. (a)

Sin(x) = OppHypSin\left(x\right)\ =\ \frac{Opp}{Hyp}Sin(x) = HypOpp​ sin⁡(x) = 36\sin\left(x\right)\ =\ \frac{3}{6}sin(x) = 63​ x = sin⁡−1(36)x\ =\ \sin^{-1}\left(\frac{3}{6}\right)x = sin−1(63​) x = 30°x\ =\ 30\degreex = 30°

Calculate, in degrees, the size of the marked unknown angle.Give your answer correct to 1 decimal place. (a)

Calculate, in degrees, the size of the marked unknown angle.Give your answer correct to 1 decimal place. (a)

Calculate, in degrees, the size of the marked unknown angle.Give your answer correct to 1 decimal place. (a)

Calculate, in degrees, the size of the marked unknown angle.Give your answer correct to 1 decimal place. (a)

Calculate, in degrees, the size of the marked unknown angle.Give your answer correct to 1 decimal place. (a)

Calculate, in degrees, the size of the marked unknown angle.Give your answer correct to 1 decimal place. (a)

Calculate, in degrees, the size of the marked unknown angle.Give your answer correct to 1 decimal place. (a)

Calculate, in degrees, the size of the marked unknown angle.Give your answer correct to 1 decimal place. (a)

Calculate, in degrees, the size of the marked unknown angle.Give your answer correct to 1 decimal place. (a)

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Calculate, in degrees, the size of the marked unknown angle.

(a)

$Sin\left(x\right)\ =\ \frac{Opp}{Hyp}$

$\sin\left(x\right)\ =\ \frac{3}{6}$

$x\ =\ \sin^{-1}\left(\frac{3}{6}\right)$

$x\ =\ 30\degree$

Calculate, in degrees, the size of the marked unknown angle.

Give your answer correct to 1 decimal place.

(a)

Calculate, in degrees, the size of the marked unknown angle.

Give your answer correct to 1 decimal place.

(a)

Calculate, in degrees, the size of the marked unknown angle.

Give your answer correct to 1 decimal place.

(a)

Calculate, in degrees, the size of the marked unknown angle.

Give your answer correct to 1 decimal place.

(a)

Calculate, in degrees, the size of the marked unknown angle.

Give your answer correct to 1 decimal place.

(a)

Calculate, in degrees, the size of the marked unknown angle.

Give your answer correct to 1 decimal place.

(a)

Calculate, in degrees, the size of the marked unknown angle.

Give your answer correct to 1 decimal place.

(a)

Calculate, in degrees, the size of the marked unknown angle.

Give your answer correct to 1 decimal place.

(a)

Calculate, in degrees, the size of the marked unknown angle.

Give your answer correct to 1 decimal place.

(a)