prove that sinA -cosA+1/sinA+cosA-1=1+sinA/cosA
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Step-by-step explanation:
L.H.S.
1+sinA
cosA
+
cosA
1+sinA
=
cosA(1+sinA)
cos
2
A+(1+sinA)
2
=
cosA(1+sinA)
cos
2
A+1+sin
2
A+2sinA
=
cosA(1+sinA)
2+2sinA
=
cosA
2
=2secA =
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