Question

IfsincosAA=,090°<<°A, thenAis equal to

Answer 1

Answer:

b) 45° ✔

Step-by-step explanation:

Question Must Be sinA.cosA=1/2

And, 0°<A<90° is

a) 30°, b) 45°, c) 60°

A can be 30,45,60 degrees keep each value in sinA.cosA=1

LHS=sin30°×cos30°=1/2×√3/2=√3/4

which is not equal to RHS

LHS=sin45°×cos45°=1/√2×1/√2=1/2

Hence this is correct Answer