9. Find the length of side x. Round to the nearest tenth.\\ 114\\ 8.2\\ 28°\\ x\\ Bonus. Establish the identity. Solve the left-hand side to look like the right.\\ $\sec^{2}\frac{\theta}{2} = \frac{2}{1+\cos\theta}$
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If it is a right-angled triangle, we can use trigonometric functions to find the length of side x. Show more…
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