Sum and Difference Formulas - Sine and Cosine

Front

What are the Sum and Difference Formulas for Sine?

Back

sin(a ± b) = sin(a)cos(b) ± cos(a)sin(b)

Tags

CCSS.HSF.TF.C.9

Front

What are the Sum and Difference Formulas for Cosine?

Back

cos(a ± b) = cos(a)cos(b) ∓ sin(a)sin(b)

Tags

CCSS.HSF.TF.C.9

Front

Find the exact value: sin(5π/12)cos(π/4) - cos(5π/12)sin(π/4)

Back

1/2

Tags

CCSS.HSF.TF.C.9

Front

Write the expression cos(175)cos(55) + sin(175)sin(55) as a sine or cosine of an angle.

Back

cos(120)

Tags

CCSS.HSF.TF.C.9

Front

Find the exact value: cos(265 - 25)

Back

-1/2

Tags

CCSS.HSF.TF.C.9

Front

Find the exact value: cos(20)cos(40) - sin(20)sin(40)

Back

1/2

Tags

CCSS.HSF.TF.C.9

Front

Find the exact value: cos(5π/18 - π/9)

Back

√(3)/2

Tags

CCSS.HSF.TF.C.9

Front

What is the relationship between sine and cosine in the context of the unit circle?

Back

On the unit circle, sin(θ) is the y-coordinate and cos(θ) is the x-coordinate of the point at angle θ.

Tags

CCSS.HSF.TF.A.2

Front

What is the value of sin(90°)?

Back

1

Tags

CCSS.HSF.TF.A.2

Front

What is the value of cos(0°)?

Back

1

Tags

CCSS.HSF.TF.A.2