The trigonometric ratios sine, cosine and tangent are used to calculate angles and sides in right angled triangles. We are now going to extend trigonometry beyond right angled triangles and use it ...

To find the value of \ (Ɵ\), calculate sin⁻¹ or cos⁻¹ or tan⁻¹ of the fraction on the right hand side. sin⁻¹ or cos⁻¹ or tan⁻¹ can usually be inputted on a scientific calculator ...

From our ship-mast example before, the relationship between an angle and its tangent can be determined from its graph, shown below. The graphs of sine and cosine are included as well.

In a right angled triangle the three sides are perpendicular, base and hypotenuse, as shown in the image below. There are three main trigonometric functions - Sine θ (sin θ), Cosine θ (cos θ ...

Therefore, tan (P) – cot (R) = 0 Q. If sin A = 3/4, calculate cos A and tan A. Sol. Given a triangle ΔABC with right angle at B, Given: Sin A = 3/4 Sin A = Opposite side /Hypotenuse= ¾ ...