Trigonometry - Edexcel

The three trigonometric ratios; sine, cosine and tangent are used to calculate angles and lengths in right-angled triangles. The sine and cosine rules calculate lengths and angles in any triangle.

Trigonometry

1

What is the name for the side y in this triangle?

Right angle triangle with side y and angle of 40 degrees

2

Which trigonometric ratio should be used to find the length of the adjacent side?

Triangle with adjacent side labelled

3

Which trigonometric ratio calculates the sin of x?

4

Which trigonometric ratio should be used to find the length of y?

Right angle triangle with side y, 6cm and angle of 35 degrees

5

Which calculation shows the correct working to find y?

Right angle triangle with side y, 6cm and angle of 35 degrees

6

What is the length of y?

Right angle triangle with side y, 6cm and angle of 35 degrees

7

Which calculation shows the correct working to find the size of angle x?

Triangle (PQR) with sides 6cm and 9cm, angle x

8

What is the size of angle x?

Triangle (PQR) with sides 6cm and 9cm, angle x

9

What is the name of this trigonometric graph?

Y = sin x

10

What is the trigonometric formula for the area of any triangle?

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