if 13 sin theta=5 where theta is an acute angle.find the value of
2sin theta+cos theta/sec2theta-tan2theta
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Answer : 22/13
Sin theta =5/13
Sin^2theta + cos ^2 theta =1
Cos ^2 theta = 1- (5/13)^2
=1-25/169
=169-25/169
=144/169
Cos theta = 12/13
*(2 Sin theta + cos theta)/(sec^2 theta - tan ^2 theta)
(2 sin theta + cos theta) /1
(2*5/13+12/13)=10/13+12/13 =22/13
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