If cot2 θ + cot4 θ = 2, then the value of 2 sin4 θ + sin2 θ is:
If A lies between 45° and 540°, and sin A = 0.5, what is the value of A/3 in degrees?
Of the given numbers, one number is a perfect square number which is it?
X, Y and Z can do a piece of work in 46 days, 92 days and 23 days, respectively, X started the work. Y joined him after 2 days. If Z joined them after 8 days from the beginning then for how many days did X work?
If \(tan\theta = {a \over b}\), then \({a.sin\theta + b.cos\theta \over {a.sin\theta - b.cos\theta}}\) is: