Mark M. answered 05/06/20
Tutor
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Retired math prof. Very extensive Precalculus tutoring experience.
cos(90°- θ) = cos90°cosθ + sin90°sinθ = (0)cosθ + (1)sinθ = sinθ
John L.
asked 05/06/20Mark M. answered 05/06/20
Retired math prof. Very extensive Precalculus tutoring experience.
cos(90°- θ) = cos90°cosθ + sin90°sinθ = (0)cosθ + (1)sinθ = sinθ
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