Trigonometry Common Values Revision and Worksheets | Maths Made Easy

# Trigonometry Common Values Revision and Worksheets

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## What you need to know

Up to this point, we’ve let our calculators do the heavy lifting when it comes to evaluating the 3 trig functions, but there are some values of the trig functions that you have to remember. Specifically, you will have to remember sin, cos, and tan of $0\degree, 30\degree, 45\degree, 60\degree,$ and $90\degree$. The values are outlined in the table on the right.

There are a lot of values here, but also a lot of repeats. A good tip for sin and cos is: if you have two angles that add up to 90, e.g. 60 and 30, then the sin of one will be the same as the cos of another.

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