If cos α = sin β, what must be true about α and β?

α and β are complementary angles

α and β are supplementary angles

What are complementary angles?

Angles that are equal to each other

Angles that are opposite of each other when lines intersect.

Which of the following is equal to the cos ⁡ 35 ° ? \cos\ 35\degree? cos 3 5 ° ?

sin ⁡ 55 ° \sin\ 55\degree sin 5 5 °

sin ⁡ 35 ° \sin\ 35\degree sin 3 5 °

cos ⁡ 55 ° \cos55\degree cos 5 5 °

cos ⁡ 145 ° \cos145\degree cos 1 4 5 °

Inverse Trig and Solving Triangles

Authored by Sally Snelson

Mathematics

9th - 10th Grade

CCSS covered

Used 17+ times

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20 questions

Show all answers

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

Find the measure of the indicated angle.

9.39

55.2

20.2

19.4

Tags

CCSS.HSG.SRT.D.10

CCSS.HSG.SRT.D.11

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

Find the measure of the missing angle.

64^o

26^o

61^o

.008^o

Tags

CCSS.HSG.SRT.C.8

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

We can use SOH-CAH-TOA for...

Any triangle ever

Non-right triangles only

Right Triangles only

Never

Tags

CCSS.HSG.SRT.C.7

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Set up the problem...

sin X = 41/28

tan X = 41/28

cos X = 28/41

sin X = 28/41

Tags

CCSS.HSG.SRT.C.6

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

Solve the right triangle.

<B = 39^o, AB = 11.58, AC = 7.29

<B = 39^o, AB = 7.29, AC = 11.58

<B = 129^o, AB = 11.58, AC = 7.29

<B = 129^o, AB = 7.29, AC = 11.58

Tags

CCSS.HSG.SRT.C.8

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

Solve the right triangle.

<A = 34^o, <C = 56^o, AC = 5.59

<A = 56^o, <C = 34^o, AC = 5.59

<A = 34^o, <C = 56^o, AC = 9.01

<A = 56^o, <C = 34^o, AC = 9.01

Tags

CCSS.HSG.SRT.C.8

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Find the measure of the missing angle.

64^o

26^o

61^o

.008^o

Tags

CCSS.HSG.SRT.C.8

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