if cot theta 3/ 4 then evaluate (1-sinx) (1+sinx) /(1-cosx)(1+cosx)
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let theta =x
here I think theta is =x
cotx=3/4
b/p=3/4
h=5 pythagorus therom
sinx=4/5,cosx=3/5
put it in the expression
here I think theta is =x
cotx=3/4
b/p=3/4
h=5 pythagorus therom
sinx=4/5,cosx=3/5
put it in the expression
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