When 0o < θ < 90o and 3tan2θ - 1 = 0. Then θ is equal to
90o
30o
60o
45o
If cos 3θ=√32; 0∘<θ<20∘ , then value of θ is:
If sin(2α + 45o) = cos(30o - α), where, 0o < α < 90o, then the value of α in degrees is.
If sin (A + B) = 1, cos (A – B) = 1 and 0∘<A+B≤90∘, find A and B.