Question
Find the acute angles between the curves at their points ofintersection. The angle between two curves is the angle betweentheir tangent lines at the point of intersection.)$$y=\sin x, \quad y=\cos x, \quad 0 \leqslant x \leqslant \pi / 2$$
Step 1
Setting $\sin x = \cos x$, we find that $x = \pi / 4$ is the only solution in this interval. Show more…
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