34-c Sine and Cosine: Complementary Angles

Front

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

Back

α and β are complementary angles.

Tags

CCSS.HSG.SRT.C.7

Front

What is the cosine of angle A?

Back

b/c

Tags

CCSS.HSG.SRT.C.6

Front

What is the missing number? Sin(70) = Cos ( )

Back

20

Tags

CCSS.HSG.SRT.C.7

Front

What sides do you use for the SINE ratio?

Back

Opposite and Hypotenuse.

Tags

CCSS.HSG.SRT.C.6

Front

What are complementary angles?

Back

Angles that add up to 90°.

Tags

CCSS.7.G.B.5

Front

What is the relationship between sine and cosine for complementary angles?

Back

sin(θ) = cos(90° - θ).

Tags

CCSS.HSG.SRT.C.7

Front

What is the sine of a 30° angle?

Back

1/2.

Tags

CCSS.HSG.SRT.C.7

Front

What is the cosine of a 60° angle?

Back

1/2.

Tags

CCSS.HSG.SRT.C.7

Front

If two angles are complementary, what is the sum of their measures?

Back

90°.

Tags

CCSS.7.G.B.5

Front

What is the sine ratio in a right triangle?

Back

Opposite side / Hypotenuse.

Tags

CCSS.HSG.SRT.C.6