Sum and Difference Formulas - Sine and Cosine

Sum and Difference Formulas - Sine and Cosine

Assessment

Flashcard

Mathematics

9th Grade - University

Hard

CCSS
HSF.TF.C.9, HSF.TF.A.2, HSF.TF.B.7

+1

Standards-aligned

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15 questions

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1.

FLASHCARD QUESTION

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

2.

FLASHCARD QUESTION

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

3.

FLASHCARD QUESTION

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

4.

FLASHCARD QUESTION

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

5.

FLASHCARD QUESTION

Front

Find the exact value: cos(265 - 25)

Back

-1/2

Tags

CCSS.HSF.TF.C.9

6.

FLASHCARD QUESTION

Front

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

Back

1/2

Tags

CCSS.HSF.TF.C.9

7.

FLASHCARD QUESTION

Front

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

Back

√(3)/2

Tags

CCSS.HSF.TF.C.9

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