# Sine and cosine graphs

In this lesson, we will look at the sine and cosine graphs and compare them.

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.

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!

## Question 6

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

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.

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!

## Question 6

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.

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.

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.

## Question 7

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

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.

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.

## Question 7

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

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This was the final lesson in the unit Surds and trigonometry.