If y=(\frac{2\cos2\theta+\cos\theta}{\cos3\theta+\cos^2\thet... | Mathematics | SolveeIt | Solveeit

Today, August 18

Question

If y= $\frac{2\cos2\theta+\cos\theta}{\cos3\theta+\cos^2\theta+\cos\theta}$ , Then value of y''+y'+y is

A

secθ(1-tan3θ)

B

tanθ(sec3θ+2tan2θ)

C

secθ(2sec2θ+tanθ)

D

cotθ(sec3θ+2tanθ)

Answer

secθ(2sec2θ+tanθ)

Explanation

Solution

The Correct answer is option is (C) : secθ(2sec2θ+tanθ)