Question

Prove that sin? A+cos A = 1(A is a cute)​

Answer 1

Answer:

Step-by-step explanation:

sin A+cos A = 1

→ sin A= 1 - cos A

→sin² A=1+cos² A - 2cos A

→1- cos² A= 1 + cos²A -2 cosA

→2cos² A - 2 cosA= 0

→cos A(cosA - 1)= 0

→cos A =0 or, cos A= 1

so, A= 90º, or A=0º