Year 9

Sine, cosine and tangent

Free examples and worked answers. No account needed.

Start practisingLoading personal best…

Practise the method.

Example 1

Right triangle
Right triangleRight triangle, right angle at the lower left. vertical leg x cm; hypotenuse 14 cm. Angle at the lower right is 30 degrees. Diagram not to scale. Use the labelled measurements.x cm14 cm30°
Show worked answer

Answer:

Example 2

Right triangle
Right triangleRight triangle, right angle at the lower left. Horizontal leg x cm; hypotenuse 14 cm. Angle at the lower right is 60 degrees. Diagram not to scale. Use the labelled measurements.x cm14 cm60°
Show worked answer

Answer:

Example 3

Right triangle
Right triangleRight triangle, right angle at the lower left. Horizontal leg 5 cm; vertical leg x cm. Angle at the lower right is 45 degrees. Diagram not to scale. Use the labelled measurements.5 cmx cm45°
Show worked answer

Answer: