Cosine (cos(x)): Cosine is another trigonometric function that represents the ratio between the length of the adjacent side and the hypotenuse in a right triangle.
Cotangent (cot(x)): Cotangent is a trigonometric function that represents 1/tangent.
Inverse Trigonometric Functions:Inverse trigonometric functions allow us to find angles when we know certain ratios. They are used to solve equations involving trigonometric functions.