Which Side?
Arrange the diagrams in groups depending on whether the arrow is pointing to the opposite, adjacent or hypotenuse.
Trigonometry
Sine, cosine and tangent ratios are used to find sides and angles in right-angled triangles.
Formulae to Remember
The traditional pairs or pelmanism game adapted to test recognition for formulae required to be memorised for GCSE exams.
Trigonometry in 3D
Calculate the lengths of sides and the size of angles in three dimensional shapes.
If Then Trigonometry
Finding the exact values of sine, cosine and tangent of angles if given a different trig ratio.
Common Trig Ratios Degrees
A self-marking exercise on finding the exact values of sine, cosine and tangent of special angles.
Trigonometry Advanced
A self-marking exercise on the sine rule, cosine rule and the sine formula for finding the area of a triangle.
Common Trig Ratios Radians
A self-marking exercise on finding the exact values of sine, cosine and tangent of special angles given in radians.
Search for Infinity
Manipulate the Lissajou curve to produce a perfectly symmetrical (vertically and horizontally) infinity symbol.
This is the main Transum help video on Trigonometry.
Trigonometry Video
The basic trigonometric ratios are sine, cosine and tangent and are used to find the lengths of sides and the size of angles in right-angled triangles.
Trigonometry and Pythagoras
A trigonometry and Pythagoras theorem revision song
Common Trig Ratios Video
You may not realise that it is possible to find sin60° or tan45° without a calculator. This video is to help you do the online, self-marking exercise.
Three Dimensional Trigonometry Video
When you have mastered trigonometry in two dimensions it is time to practise solving three-dimensional problems.
Formulae for GCSE
These are the formulae candidates need to know for the GCSE(9-1) Maths exams.
3D Trigonometry Presentation
A slide presentation (a poem) introducing using trigonometry (including Pythagoras' Theorem) to find lengths and angles on three dimensional shapes.
Inverse Trig Calculator
This calculator is designed to find all of the angles for a given trigonometric ratio and show them on a graph.
Triangle Solver
Provide and three measurements for a triangle and this application will work out the remaining sides, angles and area.
Trig Tour
See angles, in either degrees or radians, on the unit circle and the graph of the trigonometric function.
Refreshing Revision
It is called Refreshing Revision because every time you refresh the page you get different revision questions.
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Teachers might find the complete Trigonometry Topic List useful.
Trigonometry is a branch of mathematics that studies triangles and the relationships between their sides and the angles between these sides. Pupils begin by learning the names on the sides of a right-angled triangle relative to the angles. They then learn the ratios of the lengths of these sides and the connection these ratios have with the size of the angles.
Having mastered right-angled triangle trigonometry pupils then progress to more advanced uses including the sine rule and cosine rules.
The use of a scientific or graphing calculator is essential for this topic and correct, efficient use of the calculator is an important skill to develop.
Here's a Trigonometry Wordsearch just for fun.
