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Maths

If A,B,C are the interior angles of a triangle ABC then show that cosec ² (b+c÷2)-tan ² a÷2=1

Karthiga Muneeswaran

Feb. 2, 2019, 6:28 p.m.

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Karthiga Muneeswaran

Feb. 2, 2019, 6:29 p.m.

Dont know

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