(1 - cos A) (1
+ sec A) = tan A sin A.
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Answer:Given LHS = (1 - cosA)(1 + secA)
= (1- cosA) ( 1+ 1/ cos A)
= (1- cosA) ( cos A+1)/ cos A
= (1- cosA) ( 1+ cos A ) / cos A
= 1- cos sq A/ cos A
= sin sq A / cos A
= sin A X sin A / cos A
= sinA * tanA.
Hope this helps!
Step-by-step explanation:
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