Hello Pavan I came across this question while doing some extra questions based on this chaper.i cannot solve the following 4 questions. pleasw help me with this.PLS REPLY AS SOON AS POSSIBLE

The questions which you posted are not visible. The answer to the second question which was visible is as follows:

 

LHS =

cosec A + cot A - (cosec²A - cot²A ) / cot A- cosec A + 1 (USING IDENTITY)

= cosec A + cot A -( cosec A + cot A) ( cosecA - cot A) /cot A - cosecA+1

= cosec A+ cot A ( 1- cosec A+ cot A) / cot A-cosec A+1

= cosec A+ cot A

 

RHS

1+cos A /sin A

= 1/ sin A+ cos A / sin A

=cosec A + cot A

Hence LHS =RHS