Question

(1 - cos A) (1
+ sec A) = tan A sin A.​

Answer 1

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: