Show that $2 \cos^{-1} \frac{4}{5} = \sin^{-1} \frac… |

Q16Short4 marks2022 · Annual

Question

2 \cos^{-1} \frac{4}{5} = \sin^{-1} \frac{24}{25}\text{.}

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Apply fundamental law and its deductions to derive: Trigonometric ratios of allied angles, double angle, half angle and triple angle identities.