Answers Precalculus Trigonometric Sum Identities — Unit testQuestion 22

22

QuizMultiple Choice

Trigonometric Sum Identities — Unit test

Question 22 • Precalculus

What is the value of sin(80°)cos(20°) – cos(80°)sin(20°)?

Answer

A

Negative one-half

Option A

B

Negative StartFraction StartRoot 3 EndRoot Over 2 EndFraction

Option B

C

One-half

Option C

D

StartFraction StartRoot 3 EndRoot Over 2 EndFraction

Option D

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