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Sum and Difference Identities

Quiz by Kimberly McGinnis

High School
Precalculus
Texas Essential Knowledge and Skills (TEKS)

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3 questions
Show answers
  • Q1
    Which of the following is the same as cos (A+B)
    sin A cos B + cos A sin B
    sin A cos B - cos A sin B
    cos A cos B - sin A sin B
    cos A cos B + sin A sin B
    300s
    111.42.C.4.E
  • Q2
    Which of the following is the same as sin (A - B)
    sin A cos B - sin B cos A
    sin A cos B + cos A sin B
    cos A cos B + sin A sin B
    sin A cos B - cos A sin B
    300s
  • Q3
    Expand sin (33 +42)
    sin 33 cos 42 + cos 33 sin 42
    cos 33 cos 42 - sin 33 sin 42
    sin 33 sin 42 + cos 33 cos 42
    sin 33 cos 42 - cos 33 sin 42
    300s

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