# Applying Trigonometry

In this lesson, we will apply and manipulate the full compliment of trigonometric ratios to solve missing length triangle problems.

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.Solve the equation to 2 decimal places

1/4

Q2.Find the length of y, to 3 significant figures

2/4

Q3.Here is a right-angled isosceles triangle. Find the length AC to 2 decimal places.

3/4

Q4.4. Find the radius of this circle, to 3 significant figures. xy = 5.5 cm and angle xyz = 40

4/4

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.Solve the equation to 2 decimal places

1/4

Q2.Find the length of y, to 3 significant figures

2/4

Q3.Here is a right-angled isosceles triangle. Find the length AC to 2 decimal places.

3/4

Q4.4. Find the radius of this circle, to 3 significant figures. xy = 5.5 cm and angle xyz = 40

4/4

# Video

Click on the play button to start the video. If your teacher asks you to pause the video and look at the worksheet you should:

• Click "Close Video"
• Click "Next" to view the activity

Your video will re-appear on the next page, and will stay paused in the right place.

# Worksheet

These slides will take you through some tasks for the lesson. If you need to re-play the video, click the ‘Resume Video’ icon. If you are asked to add answers to the slides, first download or print out the worksheet. Once you have finished all the tasks, click ‘Next’ below.

Quiz:

# Applying Trigonometry

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

Q1.A ladder leans against a wall. It is 3m away from the wall at an angle of 60 degrees. What is the length of the ladder?

1/3

Q2.A man stands exactly 8m from a lamppost. He looks to the top of the lamppost, as shown. What is the height of the lamppost? Answer to 1 dp

2/3

Q3.Find the perpendicular height of this parallelogram to 1 decimal place

3/3

Quiz:

# Applying Trigonometry

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

Q1.A ladder leans against a wall. It is 3m away from the wall at an angle of 60 degrees. What is the length of the ladder?

1/3

Q2.A man stands exactly 8m from a lamppost. He looks to the top of the lamppost, as shown. What is the height of the lamppost? Answer to 1 dp

2/3

Q3.Find the perpendicular height of this parallelogram to 1 decimal place

3/3

# Lesson summary: Applying Trigonometry

## Time to move!

Did you know that exercise helps your concentration and ability to learn?

For 5 mins...

Move around:
Walk

On the spot:
Chair yoga