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 ...
Identify the type of angles in the triangle. Acute angles (less than 90°). Right angle (exactly 90°), marked with a square. Obtuse angles (greater than 90° and less than 180°). Using the ...
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