Question

(1+cos)(1-cos)/(1+sin)(1-sin)

Answer 1

Answer:

here's no angle value of sin and cos,but it should.

Step-by-step explanation:

if q.

(1+cosA)(1-cosA)/(1+sinA)(1-sinA) then,

=1-cos^2A/1-sin^2A

=sin^2A/cos^2A

=tan^2A