Check whether √5 and 1.10 rational or irrational
If a sin θ - b cos θ = c and , a cos θ + b sin θ = √(a 2 + b2 - c 2 ).prove that sinθ= cosθ or a≤ = b≤
The sum of n terms of a series for all value of n is n^2+3n. Find the first 3 terms of the series?