Introduction to Trigonometry Mind Map
Use this learning tree to open the right concept in the right order. Start with a branch, expand it, then move into the concept page you need next.
Trigonometric ratios
highTrigonometric ratios are the fixed ratios between the sides of a right triangle for a chosen acute angle.
Always identify the chosen angle first, then label opposite, adjacent, and hypotenuse before writing any ratio.
Sin A, cos A and tan A
highSin A, cos A, and tan A are the basic trigonometric ratios formed from the opposite, adjacent, and hypotenuse sides of a right triangle.
Remember the order with a short check: sine and cosine both use the hypotenuse, while tangent does not.
Cosec A, sec A and cot A
highCosec A, sec A, and cot A are the reciprocal trigonometric ratios of sine, cosine, and tangent.
When you see cosec, sec, or cot, ask yourself which basic ratio must be flipped.
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