Asked by Anna
For all values of x for which the expressions are defined, prove the following equation identity
2/sec = 2-2 sin^2 x/ cos x
2/sec = 2-2 sin^2 x/ cos x
Answers
Answered by
Reiny
LS = 2cosx
RS = 2(1 - sin^2 x)/cosx
= 2cos^2 x/cosx
= 2cosx
= LS
RS = 2(1 - sin^2 x)/cosx
= 2cos^2 x/cosx
= 2cosx
= LS
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