1.

Express 1+2sinthettacostheta as a perfect square

Answer»

1 + 2 cosθsinθwe know 1 = sin²θ+ cos²θsin²θ+ cos²θ+ 2cosθsinθUse a² + b² + 2ab = (a+b)²so we get (sinθ+ cosθ)²



Discussion

No Comment Found