prove the identity ..plz fast
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hey mate ur ans is with this attachment
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Anjinisharma:
thank you so much
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It is in the form of ( a+b) whole square where it is a2+b2+2ab
So,
Sin2a+cosec2a+2sina.coseca+cos2a+sec2a+2cosa.seca
=1+cosec2a+sec2a+2sina.1÷sina+2cosa÷cosa(sin2a+cos2a=1,coseca=1÷sin,seca=1÷cos)
=5+cosec2a+sec2a
=5+l+cot2a+1+tan2a(cosec2a-cot2a=1,sec2a-tan2a÷1)
=7+tan2a+cot2a
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