please find the question in the attachment
its question no.4
Hello kandyflossHave a look at the diagram I've attached. I've shown all the distances you need. You need to:
- Calculate $\displaystyle \angle$ BAC, using the Cosine Rule on $\displaystyle \triangle$ ABC.
.- Calculate $\displaystyle \angle$ BAR using the fact that $\displaystyle \triangle$ BAR is right-angled at R.
.- Calculate $\displaystyle \angle$ CAS in a similar way
.- Hence calculate $\displaystyle \angle$ PAT and finally the arc length PT
Can you complete it now?
Grandad