Substitute the exact values to find a missing length

In this lesson, we will find a missing length of a right angled triangle using prior knowledge of exact trigonometry ratios for 0°, 30°,45°,60° and 90°

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Unit quizzes are being retired in August 2023

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Quiz:

Intro quiz - Recap from previous lesson

Before we start this lesson, let’s see what you can remember from this topic. Here’s a quick quiz!

Q1.Which angles of the trigonometry ratios will this triangle help you to find?

1/3

Q2.Which angles of the trigonometry ratios will this triangle help you to find?

2/3

Q3.Find the missing angle in the triangle below.

3/3

This quiz includes images that don't have any alt text - please contact your teacher who should be able to help you with an audio description.

Unit quizzes are being retired in August 2023

Why we're removing unit quizzes from the website >
Quiz:

Intro quiz - Recap from previous lesson

Before we start this lesson, let’s see what you can remember from this topic. Here’s a quick quiz!

Q1.Which angles of the trigonometry ratios will this triangle help you to find?

1/3

Q2.Which angles of the trigonometry ratios will this triangle help you to find?

2/3

Q3.Find the missing angle in the triangle below.

3/3

Video

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Worksheet

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This quiz includes images that don't have any alt text - please contact your teacher who should be able to help you with an audio description.

Unit quizzes are being retired in August 2023

Why we're removing unit quizzes from the website >
Quiz:

Substitute the exact values to find a missing length

Don’t worry if you get a question wrong! Forgetting is an important step in learning. We will recap next lesson.

Q1.Find the length labelled x without a calculator.

1/3

Q2.Find the length labelled x without a calculator.

2/3

Q3.Find the missing length labelled x without using a calculator.

3/3

This quiz includes images that don't have any alt text - please contact your teacher who should be able to help you with an audio description.

Unit quizzes are being retired in August 2023

Why we're removing unit quizzes from the website >
Quiz:

Substitute the exact values to find a missing length

Don’t worry if you get a question wrong! Forgetting is an important step in learning. We will recap next lesson.

Q1.Find the length labelled x without a calculator.

1/3

Q2.Find the length labelled x without a calculator.

2/3

Q3.Find the missing length labelled x without using a calculator.

3/3

Lesson summary: Substitute the exact values to find a missing length

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