Finding Side Lengths and Angles Using Trig Ratios

What is the value of the missing side length?

Find side AB?

• 20 m

• 5 m

• 11.54 m

• 8.66 m

What is the correct ratio?

• sin 40 = w/28

• cos 40 = w/28

• tan 40 = w/28

• sin 40 = 28/w

Which equation would be used to find the missing side length?

Use the Trig Toolkit to find the missing side length, y. Choose your answer from the dropdown menu below.

ANSWER: ​ (a)  

• y = 20

• y = 70

• y = 50

Find the length of side w.

• 21.4 cm

• 18.0 cm

• 36.5 cm

• 43.6 cm

Use trig ratios (SOH CAH TOA) to solve for x 

• 5.0

• 6.1

• 7.7

• 6.4

Find the length of side w.

• 21.4 cm

• 18.0 cm

• 36.5 cm

• 43.6 cm

what is the exact value of "h"

Mathematical Equivalence

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What is the value of the missing side length?