Question

The equation of tangent to the curve $y = \cos(x + y)$ where $-2\pi \le x \le 2\pi$ and which is parallel to the line $x + 2y = 0$, is

• A. $2x + 4y + \pi = 0$
• B. $2x + 4y - \pi = 0$
• C. $2x + 4y - 3\pi = 0$
• D. $2x - 4y + 3\pi = 0$

Hint:

For curves involving trigonometric functions, check if the calculated point satisfies the original curve equation.

Answer 1

The Correct Option is B