# Sine and cosine graphs

In this lesson, we will look at the graphs made by the sine and cosine functions and compare them to highlight similarities and differences.

#### 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.Fill in the gap: You can use the inverse sine function to work out the unknown angle, when given the opposite and ................. in a right- angled triangle.

1/6

Q2.Fill in the gap: You can use the inverse cosine function to work out the unknown angle, when given the hypotenuse and ................. in a right- angled triangle.

2/6

Q3.Use the sine ratio to find out the missing angle in the triangle shown below.

3/6

Q4.Which is the correct method to work out the missing angle?

4/6

Q5.Which is the correct method to work out the missing angle?

5/6

Q6.Which is the correct method to work out the length of missing side?

6/6

#### 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.Fill in the gap: You can use the inverse sine function to work out the unknown angle, when given the opposite and ................. in a right- angled triangle.

1/6

Q2.Fill in the gap: You can use the inverse cosine function to work out the unknown angle, when given the hypotenuse and ................. in a right- angled triangle.

2/6

Q3.Use the sine ratio to find out the missing angle in the triangle shown below.

3/6

Q4.Which is the correct method to work out the missing angle?

4/6

Q5.Which is the correct method to work out the missing angle?

5/6

Q6.Which is the correct method to work out the length of missing side?

6/6

# 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.

#### Unit quizzes are being retired in August 2023

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

# Sine and cosine graphs

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

Q1.The image below shows the graph of ......

1/7

Q2.The image below shows the graph of ......

2/7

Q3.Use the graph to give an approximate value for sin (40).

3/7

Q4.Use the graph to give an approximate value for cos (80).

4/7

Q5.Which statement is correct?

5/7

Q6.Is this true or false? sin 90 = 1

6/7

Q7.Is this true or false? Cos 90 = 1

7/7

#### Unit quizzes are being retired in August 2023

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

# Sine and cosine graphs

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

Q1.The image below shows the graph of ......

1/7

Q2.The image below shows the graph of ......

2/7

Q3.Use the graph to give an approximate value for sin (40).

3/7

Q4.Use the graph to give an approximate value for cos (80).

4/7

Q5.Which statement is correct?

5/7

Q6.Is this true or false? sin 90 = 1

6/7

Q7.Is this true or false? Cos 90 = 1

7/7

# Lesson summary: Sine and cosine graphs

## Time to move!

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

For 5 mins...

Move around:
Walk

On the spot:
Dance