Question

sec^2A(1+sinA)(1-sinA)=​

Answer 1

Answer:

The answer is 1.

Step-by-step explanation:

Sec^2 A(1+sin A)(1-sinA)

=Sec^2A(1-sin^2A) {since,a²-b²=(a+b)(a-b)}

=Sec^2A(cos^2A) {since,sin²A+cos²A=1}

=(1/cos²A)×(cos²A)

=1