Solve the equation. Give a general formula for all the solutions.
-$\cos \theta = 0$
A) $\theta = \frac { \pi } { 2 } + k \pi$
B) $\theta = 0 + \mathrm { k } \pi$
C) $\theta = 0 + 2 \mathrm { k } \pi$
D) $\theta = \frac { \pi } { 2 } + 2 \mathrm { k } \pi$

Question

Quizplus · Accepted Answer

The cosine function equals zero at $\frac{\pi}{2}$ and $\frac{3\pi}{2}$, and then every full cycle ($\pi$) thereafter, which is represented by $\theta = \frac{\pi}{2} + k\pi$, where $k$ is any integer.

Solve the Equation cos⁡θ=0\cos \theta = 0cosθ=0 A) θ=π2+kπ\theta = \frac { \pi } { 2 } + k \piθ=2π​+kπ

Solve the Equation $\cos \theta = 0$ A) $\theta = \frac { \pi } { 2 } + k \pi$