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1-2sin26-2cos64-4sin13-cos13-2-1-sec15-sin15-cos30-




Question Number 177914 by mathlove last updated on 11/Oct/22
(1)     ((2sin26+2cos64)/(4sin13 cos13))=?  (2)     (1/(sec15 sin15 cos30))=?
$$\left(\mathrm{1}\right)\:\:\:\:\:\frac{\mathrm{2}{sin}\mathrm{26}+\mathrm{2}{cos}\mathrm{64}}{\mathrm{4}{sin}\mathrm{13}\:{cos}\mathrm{13}}=? \\ $$$$\left(\mathrm{2}\right)\:\:\:\:\:\frac{\mathrm{1}}{{sec}\mathrm{15}\:{sin}\mathrm{15}\:{cos}\mathrm{30}}=? \\ $$
Answered by Rasheed.Sindhi last updated on 11/Oct/22
(1)     ((2sin26+2cos64)/(4sin13 cos13))=?   ((2sin26+2cos64)/(2sin26 ))−1+1  ((cos64)/(sin26))+1  ((cos(90−26))/(sin26))+1  ((sin26)/(sin26))+1=2
$$\left(\mathrm{1}\right)\:\:\:\:\:\frac{\mathrm{2}{sin}\mathrm{26}+\mathrm{2}{cos}\mathrm{64}}{\mathrm{4}{sin}\mathrm{13}\:{cos}\mathrm{13}}=? \\ $$$$\:\frac{\mathrm{2}{sin}\mathrm{26}+\mathrm{2}{cos}\mathrm{64}}{\mathrm{2}{sin}\mathrm{26}\:}−\mathrm{1}+\mathrm{1} \\ $$$$\frac{{cos}\mathrm{64}}{{sin}\mathrm{26}}+\mathrm{1} \\ $$$$\frac{{cos}\left(\mathrm{90}−\mathrm{26}\right)}{{sin}\mathrm{26}}+\mathrm{1} \\ $$$$\frac{{sin}\mathrm{26}}{{sin}\mathrm{26}}+\mathrm{1}=\mathrm{2} \\ $$$$ \\ $$
Answered by Rasheed.Sindhi last updated on 11/Oct/22
(1)     ((2sin26+2cos64)/(4sin13 cos13))=?    ((2sin26+2cos(90−26))/(2(2sin13 cos13)))    ((2sin26+2sin26)/(2sin26))    ((4sin26)/(2sin26))=2
$$\left(\mathrm{1}\right)\:\:\:\:\:\frac{\mathrm{2}{sin}\mathrm{26}+\mathrm{2}{cos}\mathrm{64}}{\mathrm{4}{sin}\mathrm{13}\:{cos}\mathrm{13}}=? \\ $$$$\:\:\frac{\mathrm{2}{sin}\mathrm{26}+\mathrm{2}{cos}\left(\mathrm{90}−\mathrm{26}\right)}{\mathrm{2}\left(\mathrm{2}{sin}\mathrm{13}\:{cos}\mathrm{13}\right)} \\ $$$$\:\:\frac{\mathrm{2}{sin}\mathrm{26}+\mathrm{2}{sin}\mathrm{26}}{\mathrm{2}{sin}\mathrm{26}} \\ $$$$\:\:\frac{\mathrm{4}{sin}\mathrm{26}}{\mathrm{2}{sin}\mathrm{26}}=\mathrm{2} \\ $$$$ \\ $$
Commented by mathlove last updated on 11/Oct/22
thanks  and other one
$${thanks} \\ $$$${and}\:{other}\:{one} \\ $$

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