The sine and cosine ratios

In this lesson, we will explore trigonometric ratios focusing on sine and cosine.

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!

Q1.Fill in the gaps: In a right-angled triangle, the sine of an acute angle is equal to the length of the side that is opposite to the angle, divided by the length of the …………………...

1/6

Q2.Which is the correct equation?

2/6

Q3.What is the length of the unknown side in the triangle below?

3/6

Q4.Which image shows the hypotenuse correctly labelled?

4/6

Q5.Which triangle shows the adjacent side to angle a?

5/6

Q6.Which triangle shows the opposite side to angle a?

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!

Q1.Fill in the gaps: In a right-angled triangle, the sine of an acute angle is equal to the length of the side that is opposite to the angle, divided by the length of the …………………...

1/6

Q2.Which is the correct equation?

2/6

Q3.What is the length of the unknown side in the triangle below?

3/6

Q4.Which image shows the hypotenuse correctly labelled?

4/6

Q5.Which triangle shows the adjacent side to angle a?

5/6

Q6.Which triangle shows the opposite side to angle a?

6/6

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.

Quiz:

The sine and cosine ratio

Exit Quiz

Q1.Fill in the gaps: In a right-angled triangle, the ratio of the length of the side adjacent side to the length of the hypotenuse called the ...................

1/7

Q2.What is the sine ratio of a right angled triangle with angle 30 degrees?

2/7

Q3.Which image shows the sides of the triangle correctly labelled (in relation to angle a)?

3/7

Q4.Complete the following: sine 30 = ..............

4/7

Q5.Make y the subject.

5/7

Q6.b = 14 cm when 𝑥 = ?

6/7

Q7.What is the length of the hypotenuse?

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:

The sine and cosine ratio

Exit Quiz

Q1.Fill in the gaps: In a right-angled triangle, the ratio of the length of the side adjacent side to the length of the hypotenuse called the ...................

1/7

Q2.What is the sine ratio of a right angled triangle with angle 30 degrees?

2/7

Q3.Which image shows the sides of the triangle correctly labelled (in relation to angle a)?

3/7

Q4.Complete the following: sine 30 = ..............

4/7

Q5.Make y the subject.

5/7

Q6.b = 14 cm when 𝑥 = ?

6/7

Q7.What is the length of the hypotenuse?

7/7

Lesson summary: The sine and cosine ratios

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Time to move!

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