Which statements involving cosine and sine are true? Check all that apply. sin(–45°) = –sin(45°)sin(–45°) = sin(45°)cos(–45°) = –cos(45°)cos(–45°) = cos(45°)cos(–45°) = sin(–45°)

Question

Revolt · Accepted Answer

sin(–45°) = –sin(45°); cos(–45°) = cos(45°)

Trigonometric Difference Identities

Which statements involving cosine and sine are true? Check all that apply. sin(–45°) = –sin(45°)sin(–45°) = sin(45°)cos(–45°) = –cos(45°)cos(–45°) = cos(45°)cos(–45°) = sin(–45°)

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