Suppose $\cos x =0$ and $\cos(x+z)= \frac{1}{2}$. What is the smallest possible positive value of $z,$ in radians?
Question:
Suppose $\cos x =0$ and $\cos(x+z)= \frac{1}{2}$. What is the smallest possible positive value of $z,$ in radians?
Answer:
Let's think step by step.

user
\frac{\pi}{6}
Suppose $\cos x =0$ and $\cos(x+z)= \frac{1}{2}$. What is the smallest possible positive value of $z,$ in radians?
train