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3 problems match “trigonometric values”. Clear

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1. Average rate of change of secant ●○○○○ 10 ptsFind the average rate of change of $f(x)=\sec(x)$ from $x=0$ to $x=\frac{\pi}{4}$. Round to four decimal places.
2. Cosine of 15 degrees ●○○○○ 10 ptsFind the value of $\cos 15^\circ$. Round to two decimal places.
3. Cubed sine at half angle ●○○○○ 10 ptsIf $\theta = 60^\circ$, find the value of $4\sin^3\frac{\theta}{2}$. Give your answer as a decimal.