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Prove that siny tany +cosy=secy

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Prove that siny tany +cosy=secy

asked Feb 28, 2019 9.9k views

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Prove that siny tany +cosy=secy

Mathematics
middle-school

Eggs McLaren asked

by Eggs McLaren

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sinu x siny/cosy + cosy

= (sin^2 y + cos^2 y)/cosy

= 1/cosy

= secy

Pkdkk answered Mar 4, 2019

by Pkdkk

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