Question

plz help me me it's urgent. ...(sinA-cosA)^2 =1-sin2A​

Answer 1

Step-by-step explanation:

L.H.S

Sin^2A+Cos^2A-2SinA*CosA

(Sin^2A+Cos^2A)- 2SinA*CosA

(1)-Sin2A

1-Sin2A

Here, Formula is

i. Sin^2A+Cos^2A =1

ii. 2SinA*CosA= Sin2A