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Question Number 199498 by ajfour last updated on 04/Nov/23

Commented by ajfour last updated on 04/Nov/23

$$Outer△isrightangled.Givenp,$$$$determineqintermsofp.$$

Answered by ajfour last updated on 04/Nov/23

Commented by York12 last updated on 04/Nov/23

$$\mathrm{ur}\mathrm{really}\mathrm{good}\mathrm{at}\mathrm{geo},\mathrm{recommend}\mathrm{a}\mathrm{book}\mathrm{please}$$

Commented by ajfour last updated on 05/Nov/23

$$G.Dorofeev$$$$\left(ElementaryMathematics\right)$$

Commented by York12 last updated on 05/Nov/23

$$\mathrm{Thanks}$$

Answered by mr W last updated on 05/Nov/23

$$\cos 3\alpha =p\Rightarrow \alpha =\frac{{\cos }^{-1}p}{3}$$$$q=\sin \alpha =\sin \left(\frac{{\cos }^{-1}p}{3}\right)$$

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