Geo Un6Wk3 - Trig Basics

Presentation

•

Mathematics

•

9th - 12th Grade

•

Medium

•

CCSS

HSG.SRT.C.6, HSG.SRT.C.8, HSG.CO.C.11

Standards-aligned

Chip Krolik

Used 13+ times

FREE Resource

2 Slides • 21 Questions

Review How to Find and Use
Basic Trig Ratios

Multiple Choice

What does "trigonometry" mean?

The calculation of angles

The analysis of polygons

The study of circles

'the measure of triangles'.

none of these

Multiple Choice

Which is the correct ratio for the sine ratio?

$\frac{adjacent\ }{hypotenuse}$

$\frac{opposite\ }{hypotenuse}$

$\frac{adjacent\ }{opposite\ }$

$\frac{opposite\ }{adjacent\ }$

none of these

Multiple Choice

Which is the correct ratio for the cosine ratio?

$\frac{adjacent\ }{hypotenuse}$

$\frac{opposite\ }{hypotenuse}$

$\frac{adjacent\ }{opposite\ }$

$\frac{opposite\ }{adjacent\ }$

none of these

Multiple Choice

Which is the correct ratio for the tangent ratio?

$\frac{adjacent\ }{hypotenuse}$

$\frac{opposite\ }{hypotenuse}$

$\frac{adjacent\ }{opposite\ }$

$\frac{opposite\ }{adjacent\ }$

none of these

Multiple Choice

What side is opposite $\angle\alpha$ ?

none

Multiple Choice

What side is adjacent $\angle\alpha$ ?

none

Multiple Choice

What side is the hypotenuse to $\angle\alpha$ ?

none

Multiple Choice

What is a common way to remember the definitions of the trig ratios?

SAH COH TOA

SOA COH TOA

SOH CAH TOA

ADJ OPP HYP

Multiple Choice

What is $\cos A$ ?

$\frac{29}{20}$

$\frac{21}{29}$

$\frac{20}{29}$

$\frac{21}{20}$

none of these

Multiple Choice

What is $\tan A$ ?

$\frac{29}{20}$

$\frac{21}{29}$

$\frac{20}{29}$

$\frac{21}{20}$

none of these

Multiple Choice

What is $\tan\ C$ ?

$\frac{20}{21}$

$\frac{21}{29}$

$\frac{20}{29}$

$\frac{21}{20}$

none of these

Multiple Choice

If you are given two sides of a right triangle and of of them is NOT the hypotenuse, which trig function should you use?

sine

cosine

tangent

none of these

all of these

Multiple Choice

If you are given the hypotenuse and an adjacent side, which trig function should you use?

sine

cosine

tangent

none of these

all of these

Have a calculator or Desmos ready

Multiple Choice

Find Cos(A) as a decimal rounded the the nearest ten-thousandth.

.4706

1.875

.8824

.5333

none of these

Multiple Choice

Choose the correct ratio. In other words, which equation is correct?

sinZ=5/13

sinX=5/13

cosX=13/12

tanZ=12/5

Multiple Choice

If you are given 2 of the sides to an obtuse triangle, which trig function should you use to find the other side?

sine

cosine

tangent

You can only use trig functions on right triangles.

Multiple Choice

Solve for x. Round to the nearest tenth.

9.8

0.1

0.038

9.9

Multiple Choice

Solve for x. Round to the nearest tenth.

103.5

4.7

55.0

23.4

Multiple Choice

Choose the correct ratio.

cos(33)=x/14

sin(33)=x/14

cos(33)=14/x

sin(33)=14/x

Multiple Choice

Find x round to the nearest tenth.

46.1

4.9

16.4

26.9

none of these

Poll

After this review, I feel --- about using basic trig ratios

very good/ very confident

good/confident

eh, so-so

lost! I don't get any of this trig stuff

other: my thoughts/ feelings are not listed here

Review How to Find and Use
Basic Trig Ratios

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