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Introducing Trigonometry

Use interactive diagrams to investigate the ratio of two sides of a right-angled triangle.

Publisher: Texas Instruments UK

Editor: Barrie Galpin

Author: Fiona Moir

Topic:  Mathematics

Tags: Trigonometry

Trig ratios in four quadrants

Use trig graphs to investigate the sin, cos and tan of angles in four quadrants.

Publisher: Texas Instruments UK

Editor: Christopher Rath

Topic:  Mathematics

Tags: Trigonometry

Areas of quadrilaterals and polygons

The areas of quadrilaterals, n sided shapes and regular polygons are found using the trig area formula.

Publisher: Texas Instruments UK

Editor: Barrie Galpin

Author: David J C Elgin

Topic:  Mathematics

Tags: Area, Trigonometry

Trig in a right angled triangle

Trig problems in right angled triangles are solved.

Publisher: Texas Instruments UK

Editor: Barrie Galpin

Author: David J C Elgin

Topic:  Mathematics

Tags: Pythagoras, Trigonometry