Sin Cos Tan and Missing Angles

If sin(β) = ⅝ . What is cos(α)?

• ^⅜

• ⅛

• ⅝

• ⅞

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

• α and β are complementary angles

• α and β are congruent angles

• α and β are right angles

• α and β are supplementary angles

What is the complement to: cos 40⁰ = ?

• sin 50⁰

• cos 50⁰

• tan 50⁰

• sin 40⁰

What is the complement to: sin 20⁰ = ?

• cos 70⁰

• sin 70⁰

• cos 20⁰

• tan 20⁰

Find the missing angle. Round answers to the nearest whole degree.

What is the complement to: cos 38⁰ = ?

• sin 62⁰

• sin 52⁰

• cos 52⁰

• sin 38⁰

What is the complement to: sin 1⁰ = ?

• cos 89⁰

• cos 1⁰

• sin 89⁰

• tan 1⁰

What is the missing number?
sin(60) = cos(   )

• 10

• 20

• 30

• 40

What is the missing number?
Sin(   ) = Cos(40)

• 30

• 40

• 50

• 60

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

• 45

• 95

• 145

• 195