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Common Trig Ratios :: Degrees

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

cos 150°

Correct Wrong

cos 120°

Correct Wrong

tan 150°

Correct Wrong

tan 135°

Correct Wrong

sin 150°

Correct Wrong

sin 180°

Correct Wrong

cos 240°

Correct Wrong

cos 315°

Correct Wrong

sin 225°

Correct Wrong

tan 300°

Correct Wrong

sin 300°

Correct Wrong

tan 210°

Correct Wrong

Check

Instructions

Try your best to answer the questions above. Type your answers into the boxes provided leaving no spaces. As you work through the exercise regularly click the "check" button. If you have any wrong answers, do your best to do corrections but if there is anything you don't understand, please ask your teacher for help.

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Remainder Race

A brilliant game involving chance and choice requiring an ability to calculate the remainder when a two digit number is divided by a single digit number. There are one and two player versions and the rules are inspired by the Royal Game of Ur.

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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 ninety degrees

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 ninety degrees

Level 4 - Find exact trig values for angles between ninety and three hundred and sixty degrees

Level 5 - Solving trigonometric equations with given domains

Radians - A similar set of exercises worked in radians.

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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Reminder Video

Helpful Diagrams

Common Trig Ratios
Trig Graphs

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