Help your students prepare for their Maths GCSE with this free exact trig values worksheet of 22 questions and answers
The sin, cos and tan of certain angles are exact values rather than decimals. The exact trigonometric values of sin, cos and tan are:
Knowing the exact values of sin, cos and tan allows us to use the trigonometric functions without using a calculator for certain angles.
These values can be found by applying the trigonometric ratios of sin, cos and tan to two special triangles:
For example, using the trig ratio sin(x) = opposite/hypotenuse we get sin(45) = 1/square root of 2.
Applying each of the trig functions to these triangles will give the exact trig values for 30o, 45o and 600.
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