Prove that Sec sq.A +Cot sq.(90-A)=2Cosec sq.(90-A)-1

1.	Prove that Sec sq.A +Cot sq.(90-A)=2Cosec sq.(90-A)-1
Answer» L.H.SSec sq.A+cot sq(90-A)Sec sq.A+tan sq.ASecsqA +(SecsqA -1)2sec sq.A-1R.H.S2cosec sq.A (90-A)-12sec sq.A-1 Therefore,L.H.S=R.H.S

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