# Common Trig Ratios :: Radians

## Finding the exact values of sine, cosine and tangent of special angles.

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Give the exact value for the following trig ratios. Use the / symbol to show a fraction and the root button to insert the square root sign. For example sin 45° = 1/√2

 $$\sin \frac{\pi}{2}$$ $$\cos \frac{\pi}{3}$$ $$\sin \frac{\pi}{6}$$ $$\cos 0$$ $$\tan \frac{\pi}{4}$$ $$\cos \frac{\pi}{2}$$ $$\cos \frac{\pi}{6}$$ $$\cos \frac{\pi}{4}$$ $$\sin \frac{\pi}{4}$$ $$\tan \frac{\pi}{3}$$ $$\sin \frac{\pi}{3}$$ $$\tan \frac{\pi}{6}$$
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## Description of Levels

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Surds - Make sure you understand what surds are before starting the levels below.

Level 1 - Find exact trig values for special angles up to and including pi by two radians

Level 2 - Find the indicated lengths by solving trigonometric questions with exact solutions

Level 3 - Mixed questions on exact trig values of special angles up to and including pi by two radians

Level 4 - Find exact trig values for angles between pi by two radians and two pi radians

Level 5 - Solving trigonometric equations with given domains

Degrees - A similar set of exercises worked in degrees.

If Then - Find one trig ratio if given another from the same triangle.

Exam Style Questions - A collection of problems in the style of GCSE or IB/A-level exam paper questions (worked solutions are available for Transum subscribers).

More Trigonometry including visual aids, investigations and self-marking exercises.

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