7(c) and (e) Trigo identities

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secondary 4 A Maths Singapore

7(c) and (e)
Trigo identities

Date Posted: 3 years ago

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For 7c, notice that the numerator only has cosx, so try to change the sinx to cosx using cos^2(x) + sin^2(x) = 1

Date Posted: 3 years ago