IF SINA + 2COSA = 1
THEN PROVE
2SINA - COS A = 2
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hence lhs = rhs=2
hence proved
hope it helps ; )
hence proved
hope it helps ; )
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vicky168:
we cant use RHS in proving
here the lhs has become 2 and the rhs is already 2 so I said lhs = rhs
why you use rhs 2 in finding sin value 1
it is not given we can't use that
i have not used rhs in finding the value of sin i have converted cos into son and have equated that value in equation 2 and we can do that!!
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