prove that
Asked by haynes
| 8th Apr, 2009,
07:52: PM
Expert Answer:
L.H.S.=sin2A + cosec2A + 2sinA cosecA + cos2A + sec2A + 2cosA cosecA
now use sin2A + cos2A=1 and cosec2A=1+cot2A and sec2A=1+tan2A
we get
=1+2+2+(1+cot2A ) + ( 1+tan2A)
=7+tan2A+cot2A
Answered by
| 9th Apr, 2009,
01:27: AM
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