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 ...

Calculate the angle QPR. Give the answer to one decimal place. Label the sides of the triangle \(o\), \(a\) and \(h\). Next choose the correct ratio from \(s^o_h~c^a_h~t^o_a\). In the triangle the ...

It states that in a right-angled triangle, the sum of the squares ... Any attempt at using sine, cosine, or tangent to verify Pythagoras’ equation seemed destined to rely on the theorem itself ...