Question

(1 cosA)^2
I need this answer please

Answer 1

-- ( 1 cos A )²

-- ( cos A )²

-- cos² A or 1 - sin² A

Answer 2

Answer:

${(1\cos \: a) }^{2} \\ \\ \ { \cos }^{2} a = 1 - { \sin }^{2} a$