(1+cottheta-costheta) (1 + tan theta +sectheta) =2)
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(1+cottheta-costheta) (1 + tan theta +sectheta) =2)
=(1 + cos/sin - 1/sin ) (1+1/cos + sin /cos )
=( cos + sin - 1) (cos + sin +1 )
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cos * sin
=(cos+sin)² - 1²
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cos * sin
=1+ 2 cos sin - 1
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cos * sin
= 2 (answer)
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