Question

what is called costhetta

Answer 1

The side of the triangle opposite theta is labelled sin(ϴ) and the side adjacent theta is labelled cos(ϴ). ... Similarly the cosine of ϴ can be defined as 'adjacent divided by hypotenuse'. In our diagram the hypotenuse is 1 unit long, so the length of the sides corresponds to sin and cos, as labelled.

Answer 2

The longest side of the triangle is called the hypotenuse, the side opposite the angle theta is called the opposite side, the third side is called the adjacent side. Therefore, Cos(theta) = adjacent side/ hypotenuse. 70 views.