Triangle $ABC$ is right-angled at $B$, with $AB=7$ cm and $AC=12$ cm. Find \(\theta=\angle B

Question

Triangle $ABC$ is right-angled at $B$, with $AB=7$ cm and $AC=12$ cm. Find $\theta=\angle BAC$, correct to 1 decimal place. $A$ $B$ $C$ $7\text{ cm}$ $12\text{ cm}$ $\theta$

Accepted Answer

$54.3^\circ$

Finding an angle using cosine

Finding an angle using cosine

Solution:

Solution locked