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4-sin-30-tan-45-cosec-60-sec-30-cos-60-cot-45-1-2-1-2-3-2-3-1-2-1-v-3-2-3-4-2-3-4-3-2-3-2-3-3-3-




Question Number 204905 by Manishkumar last updated on 02/Mar/24
4. ((sin 30^°  + tan 45^°  − cosec 60^° )/(sec 30^°  + cos 60^°  + cot 45^° ))    = ((1/2 + 1 − 2/(√3))/(2/(√3) + 1/2 + 1  v))  = ((((√3) + 2(√3) − 4)/(2(√3)))/((4 + (√3) + 2(√3))/(2(√3))))    = ((3(√3) − 4)/(3(√3) + 4)) × ((3(√3) − 4)/(3(√3) − 4))    = (((3(√3) − 4)^2 )/((3(√3))^2  − (4)^2 ))    = ((27 + 16 − 24(√3))/(27 − 16))    = ((43 − 24(√3))/(11))    G
$$\mathrm{4}.\:\frac{\mathrm{sin}\:\mathrm{30}^{°} \:+\:\mathrm{tan}\:\mathrm{45}^{°} \:−\:\mathrm{cosec}\:\mathrm{60}^{°} }{\mathrm{sec}\:\mathrm{30}^{°} \:+\:\mathrm{cos}\:\mathrm{60}^{°} \:+\:\mathrm{cot}\:\mathrm{45}^{°} } \\ $$$$ \\ $$$$=\:\frac{\mathrm{1}/\mathrm{2}\:+\:\mathrm{1}\:−\:\mathrm{2}/\sqrt{\mathrm{3}}}{\mathrm{2}/\sqrt{\mathrm{3}}\:+\:\mathrm{1}/\mathrm{2}\:+\:\mathrm{1}\:\:\mathrm{v}} \\ $$$$=\:\frac{\frac{\sqrt{\mathrm{3}}\:+\:\mathrm{2}\sqrt{\mathrm{3}}\:−\:\mathrm{4}}{\mathrm{2}\sqrt{\mathrm{3}}}}{\frac{\mathrm{4}\:+\:\sqrt{\mathrm{3}}\:+\:\mathrm{2}\sqrt{\mathrm{3}}}{\mathrm{2}\sqrt{\mathrm{3}}}} \\ $$$$ \\ $$$$=\:\frac{\mathrm{3}\sqrt{\mathrm{3}}\:−\:\mathrm{4}}{\mathrm{3}\sqrt{\mathrm{3}}\:+\:\mathrm{4}}\:×\:\frac{\mathrm{3}\sqrt{\mathrm{3}}\:−\:\mathrm{4}}{\mathrm{3}\sqrt{\mathrm{3}}\:−\:\mathrm{4}} \\ $$$$ \\ $$$$=\:\frac{\left(\mathrm{3}\sqrt{\mathrm{3}}\:−\:\mathrm{4}\right)^{\mathrm{2}} }{\left(\mathrm{3}\sqrt{\mathrm{3}}\right)^{\mathrm{2}} \:−\:\left(\mathrm{4}\right)^{\mathrm{2}} } \\ $$$$ \\ $$$$=\:\frac{\mathrm{27}\:+\:\mathrm{16}\:−\:\mathrm{24}\sqrt{\mathrm{3}}}{\mathrm{27}\:−\:\mathrm{16}} \\ $$$$ \\ $$$$=\:\frac{\mathrm{43}\:−\:\mathrm{24}\sqrt{\mathrm{3}}}{\mathrm{11}} \\ $$$$\:\:\cancel{\underbrace{\boldsymbol{\mathfrak{G}}}} \\ $$
Commented by Manishkumar last updated on 01/Mar/24

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