How many values of $x$, $-19<x<98$, satisfy $\cos^2 x + 2\sin^2 x = 1?$  (Note: $x$ is measured in radians.)
Question:
How many values of $x$, $-19<x<98$, satisfy $\cos^2 x + 2\sin^2 x = 1?$  (Note: $x$ is measured in radians.)
Answer:
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How many values of $x$, $-19<x<98$, satisfy $\cos^2 x + 2\sin^2 x = 1?$  (Note: $x$ is measured in radians.)
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