Complementary Angles Trig

What is the missing number?

Sin(60) = Cos( )

• 10

• 20

• 30

• 40

What is the missing number?
Sin(45) = Cos(   )

• 45

• 95

• 145

• 195

What is the missing number?
Sin(   ) = Cos(80)

• 5

• 10

• 15

• 20

What is the missing number?

Sin( ) = Cos(40)

• 30

• 40

• 50

• 60

• (1)

• (2)

• (3)

• (4)

• tan A = tan B

• sin A = tan B

• cos A = tan B

• cos A = sin B

If 𝜃 is the number of degrees of one acute angle in a right triangle, and sin(𝜃) = 3/5 , find cos (90 − 𝜃).

• 3/5

• 5/3

• 3/4

• 4/5

Sin(60°) = Cos( ?°)

• 10

• 20

• 30

• 40

Hint: The sin of and angle = The cos of its complement

• A

• B

• C

• D

sin(B) = cos(C)

• true

• false