Question

.
COSA = (1 - sa A)
cos
(1-son A)​

Answer 1

Answer:

formula of cos is

sin²A + Cos²A = 1

Step-by-step explanation:

so here,

LHS = CosA

= 1 - SinA ......{°•° Cos²A = 1 - Sin²A}

= RHS

Hence prove.

Answer 2

Answer:

(2-sonA) is correct answer