As the numbers are known on the opposite and the hypotenuse, then we look for the ratio which uses both these sides (SOH CAH TOA). That ratio is the sine ratio. \(\sin (x^\circ ) = \frac{{opposite}}{{ ...

label the sides on the triangle decide which ratio to use (SOH CAH TOA) substitute the correct ... The '12' is dividing on the right hand side, so when it moves to the other side it does the ...