Do you think MATH is hard ?
Some really interesting concepts in mathematics.Want to learn TRIGONOMETRY?
TRIGONOMETRY -is all about right angled (90°) triangle.
We usually know another angle θ .Opposite the angle θ the longest side is the HYPOTENUSE.
The special function Sine, Cosine, and Tangent help us.
1 - Sin θ = altitude/hypotenuse
2 – Cos θ = base/hypotenuse
3 – tan θ=altitude/base
4 – Cosec θ = hypotenuse/altitude = 1/Sin θ
5 – Sec θ = hypotenuse/base =1/Cos θ
6 – Cot θ = base/altitude = 1/tan θ
7 – tan θ= Sin θ/Cos θ
8 – Cot θ=Cos θ/Sin θ
Trigonometric Identities:
There are a number of fundamental trigonometric identities.
(A) Sin² θ + Cos²θ = 1
(B) 1 + tan²θ = Sec²θ
(C) 1 + Cot²θ = Cosec²θ
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