Trigonometric Formulae

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Let’s consider a right-angled triangle. There are \(3\) sides, which are the Hypotenuse, the Opposite side and the Adjacent side. The longest side is known as the Hypotenuse, the side opposite to the angle is the Opposite side and the side where both hypotenuse and opposite side rests is the Adjacent side.


Trigonometric Functions


Complementary angles


Reciprocal Identities


Pythagorean Identities


Inverse trigonometric functions with their Range  values


Cofunction Identities


Sum and Difference Identities


Double Angle Identities


Half-angle identities


Heron’s Formula

The area of a triangle in terms of its semi-perimeter and side lengths can be written as


Sine Law

The sine law says that the sides of a triangle are proportional to the sines of the angles opposite to them.


Cosine Law

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