Prove geometrically the Trigonometric values of sin, cos and tan at 45°.

Values of Trigonometric Ratios are easier to understand if memorized. But, imagine someone asks you to derive these formulae using diagram! Won't you be ashamed of yourself for not knowing the solution?

Wait not anymore! Check this geometrical proof of trigonometric ratios at 45°.

Answer:
Take a right angled isosceles triangle to help you with this solution.




This is how we can prove the Trigonometric values of all six Trigonometric Ratios.
Cosec x = h/p
Sec x = h/b
Cot x= b/p

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