The adjacent side (\(a\)) is next to the angle in question (\(x\)). The trigonometric ratios for the angles 30°, 45° and 60° can be calculated using two special triangles. An equilateral ...

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 ...

Mathematicians had long thought that using trigonometry to prove the theorem was unworkable, given that the fundamental ...

With two angles and the length of one side of the “triangle”, you can then bung all those numbers into a few trigonometric formulas (the sine rule and Heron’s formula can help) and shazam ...