# Solve problems mixing angles and sides

## Lesson details

### Key learning points

1. In this lesson, we will apply trigonometry to multi-step problems by finding missing sides and missing angles

### Licence

This content is made available by Oak National Academy Limited and its partners and licensed under Oak’s terms & conditions (Collection 1), except where otherwise stated.

## Video

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## Worksheet

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## Starter quiz

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### 3 Questions

Q1.
Which of the trigonometry ratios will be required to find the missing angle in this question?
inverse cosine
inverse tangent
Q2.
60 degrees
72.1 degrees
Q3.
27.6 degrees
48.4 degrees

## Exit quiz

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### 3 Questions

Q1.
To find x, which other side will you need to find first
a
c
Q2.
2.Work out the length of the side marked x to 2 d.p.
6.88 cm
8.51 cm
Others
Q3.
A ladder that is 5 metres long is placed against a wall. The angle of elevation is 50°. How high up the wall does the ladder reach? Give your answer to 2 d.p.
3.21 m