Question

pls .. help me i have my pre boards tommorow pls .. solve the question above

Answer 1

hey mate
refer to attachment

Answer 2

LHS = √1-2sin x cos x
Now, we can write 1 as sin^2 x + cos^2 x
Therefore,
LHS = √ cos^2 x - 2 sin x cos x + sin^2 x
Now this things here looks like a^2 - 2ab + b^2

Therefore,
LHS = √ ( cos x - sin x )^2
= cos x - sin x
= RHS