Angles Angles round a point, on a straight line, in a ...

Your calculator can give you the answer to any trigonometric ratio you want. Say we want to find how long side ‘a’ is. What we can do is write a trigonometric ratio which has ‘a’ in it. To do this, we’re going to have to pick one of the angles (apart from the right angle) in the triangle. Let’s pick the 40° angle. ................
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