MathematicsCode 4029
Right-angled triangles
What this topic asks you to be able to do
- Know the sine, cosine and tangent of an acute angle as ratios, and use them to find sides and angles in a right-angled triangle.
- Solve two-dimensional questions with the help of Pythagoras’ theorem and trigonometry.
- Know that a point's perpendicular distance to a line is the least distance between them.
- Carry out calculations with angles of elevation and of depression. Angles are stated in degrees, and answers must also be in degrees, rounded to one decimal place. A question may also call for bearings.