Trigonometric equations

What the problems look like

A few statements from this skill. Answers, hints and worked solutions live in the practice session.

1. Warm-up

   Use a calculator to find $\theta = \arctan\left(-3/2\right)$, giving your answer in degrees correct to 1 decimal place, where $-90^{\circ} < \theta < 90^{\circ}$.

2. Warm-up

   Use a calculator to find $\theta = \arctan\left(8\right)$, giving your answer in degrees correct to 1 decimal place, where $-90^{\circ} < \theta < 90^{\circ}$.

3. Warm-up

   Use a calculator to find $\theta = \arctan\left(-5\right)$, giving your answer in degrees correct to 1 decimal place, where $-90^{\circ} < \theta < 90^{\circ}$.

Problems shown under their original terms: Generated (template, solver-computed).