1-cos/1+cos = sin/1+cos thita=60
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Step-by-step explanation:
L.H.S=1-cos/1+cos
=(1-cos)(1+cos)/(1+cos)^2 (Multiply both sider by Dr)
=1^2-cos^2/(1+cos)^2
=sin^2/(1+cos)^2
=(sin/1+cos)^2
Take square root
sin/1+cos =R.H.S
Hence Proved
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Answer:
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