Finding Missing Sides Using Trig Ratios

What equation can be used to solve for x?

• Sin(40°)= x/40 

• Sin(40º)=x/19

• Cos(40º)=x/19

• Tan(40°)=19/x

What is the length of side x?

• 6.57 cm

• 7 cm

• 7.44 cm

• 26.33 cm

sin(42) x 8

• sin(42) x 8

• sin(42 x 8)

What is the missing side?

• 12.5

• 15.1

• 14.6

• 21.5

Use the Trig Toolkit to find the value of x in the given diagram. Click and drag your answer into the blank space below.

The value of x is (a)   .

• 21

• 33

• 12

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 the missing side. Round your answer to the nearest 10th.

Mathematical Equivalence

OFF

What is the correct equation?

​ (a)   = ​ (b)   /​ ​ (c)  

• Sin(40)

• w

• 28

• Cos (40)

• tan 40

What is the value of y?

Mathematical Equivalence

ON

Find the length of the missing side.

• 187.7

• 104.0

• 164.2

• 50.4