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1TrigonometryTrigonometry (from Greek trigōnon, "triangle" and metron, "measure") is a branch of mathematics that studies relationships between side lengths and angles of triangles.
2SineIt is the ratio of the length of the side that is opposite that angle to the length of the longest side of the triangle (the hypotenuse).
sine= opposite divided by hypotenuse
3Coscos(θ) is the ratio of the adjacent side to the hypotenuse .
Cos=adjacent divided by hypotenuse
4TanIn a right angled triangle, the tangent of an angle is: The length of the side opposite the angle divided by the length of the adjacent side.
Tan= Opposite divide by adjacent
5How to solve trigonometric questions1. Label the triangle
2. Choose which ratio you are going to perform
3. Execute that ration accordingly