7. IfIf cot O = 6, evaluate:2/ (1+ sin 0) (1 - sin o)) (1 + cos 0) (1 – InterviewSolution

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1.	7. IfIf cot O = 6, evaluate:2/ (1+ sin 0) (1 - sin o)) (1 + cos 0) (1 - cos 0)
Answer» cotx=7/8:; (hypo)^2=7^2+8^2=64+49=113; (hypo)=V113; we see height of (1+sinx)(1- sinx)/(1+ cosx)(1- cosx)=(1- sinx^2)/(1-cosx^2)= (1-64/V113)(1-49/V113)=(V113-64)/V113/(V113-49)/V113=64/49=8/7

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