Question 752838
Rosella,

Thanks for the question.
You should use the Cosine Ratio:<br />
Cos&#952; = adj/hyp

For ease of remembrance, use the mnemonic "SOH CAH TOA" (say /so-car-to-ah/)

Where,
SOH means Sine&#952; = opp/hyp
CAH means Cos&#952; = adj/hyp
TOA means Tan&#952; = opp/adj


I do hope you find this useful!