Trigonometry - Higher
Find YZ, giving your answer correct to 3 sf
Look again at the original arrangement of this equation. By rearranging it we have swapped the positions of YZ and cos25. This method works whenever the unknown side is at the bottom of the fraction.
Now have a go at this question, using the above method.
Find PQ, giving your answer correct to 3 sf
The answer is 7.15cm.
We have been given angle Q. Side PR is opposite angle Q and PQ is adjacent to it. We have the opposite and the adjacent so we use the formula:
tan = opposite / adjacent