The Sine and Cosine Ratios

Using your calculator, find cos 25° to 4 decimal places.

• 0.9912

• 0.9063

• 0.4226

• 0.4663

Solve for x, to the nearest tenth.

Write out and submit work.

• 8

• 14

• 19.8

• 9.9

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

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

If sin(β) = ⅝ . What is cos(α)?

• ^⅜

• ⅛

• ⅝

• ⅞

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

• 10

• 20

• 30

• 40

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

• 5

• 10

• 15

• 20

What is the missing number?
Sin(    ) = Cos (89)

• 0

• 1

• 2

• 3