1÷secA-tanA - 1÷cosA=1÷cosA -1÷secA + tanA
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Hey Buddy ur answer is....
LHS= 1/(secA+tanA) - 1/cosA
= (secA-tanA)/(secA+tanA)(secA-tanA) - 1/cosA {multiplying 1/(secA+tanA) by (secA-tanA)}
=(secA+tanA)/(sec²A - tan²A) - 1/cosA
= secA+tanA- 1/cosA {as sec²A- tan²A=1}
= secA+tanA-secA {1/cosA = secA}
=tanA.........equ(1)
RHS= in the same process but now multiplying with (secA-tanA)
Therefore the answer would come
secA-secA+tanA
= tanA.......equ(2)
So from equ(1) & equ(2)
We prove them to be equal.
Hence Proved.
Hope it helps......
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