Trigonometry close trigonometryThe study of sides and angles in triangles. can be used to find a missing side in a right-angled triangle when another side and an angle are known. An understanding ...
A scalene triangle has 3 sides of different lengths and 3 unequal angles. An isosceles triangle has 2 sides of equal length. The dashes on the lines show they are equal in length. The angles at ...
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