Question Number 203375 by a.lgnaoui last updated on 17/Jan/24
$$\:\mathrm{valeur}\:\boldsymbol{\mathrm{x}}? \\ $$$$\left(\measuredangle\mathrm{ECA}\:\:=\mathrm{90}\right) \\ $$
Commented by mr W last updated on 18/Jan/24
$$\mathrm{17}\:\mathrm{sin}\:\mathrm{5}{x}+\mathrm{17}\:\mathrm{cos}\:\mathrm{5}{x}\:\mathrm{tan}\:{x}=\mathrm{13} \\ $$$$\mathrm{sin}\:\mathrm{5}{x}+\mathrm{cos}\:\mathrm{5}{x}\:\mathrm{tan}\:{x}=\frac{\mathrm{13}}{\mathrm{17}} \\ $$$$\Rightarrow{x}\approx\mathrm{8}.\mathrm{1985} \\ $$
Commented by a.lgnaoui last updated on 18/Jan/24
$$\mathrm{yes}\:\:\:\:\mathrm{look}\:\mathrm{for}\:\:\:\mathrm{the}\:\mathrm{folowing}\:\mathrm{question} \\ $$
Commented by a.lgnaoui last updated on 18/Jan/24
Commented by a.lgnaoui last updated on 19/Jan/24
$$\mathrm{thanks} \\ $$