# Test: Trigonometry - Challenging

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Question 1:   Find $x$
$x=0.82$
$x=9.76$
$x=10.73$
$x=8.21$
Question 2:   Find $\alpha$
$\alpha =43.13°$
$\alpha =38.82°$
$\alpha =40.11°$
$\alpha =27.25°$
Question 3:   Find $x$
$x=14.17$
$x=13.79$
$x=14.84$
$x=12.28$
Question 4:   Find $\mathrm{cos}x=\frac{1}{3}$ for the values between $-{360}^{\circ }\le x\le 0$
$x=-{70.53}^{\circ },-{340.53}^{\circ }$
$x=-{70.53}^{\circ },-{250.53}^{\circ }$
$x=-{70.53}^{\circ },-{289.47}^{\circ }$
$x=-{19.47}^{\circ },-{179.9}^{\circ }$
Question 5:   Find $\mathrm{tan}x=-1$ for values between $-\pi \le x\le \pi$
$x=-{45}^{\circ },{45}^{\circ }$
$x=-{45}^{\circ }$
$x={45}^{\circ },{135}^{\circ }$
$x=-{45}^{\circ },{135}^{\circ }$
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