Question

Can someone solve these please

Answer 1

20 :

cos∠R = RT/RS=14/48

∠R≈73,042...≈73°

21 :

sin∠R=ST/RS=30/40=3/4=0,75

∠R≈48,590..=48,6°

22 :

tan∠R =TS/TR=√7/9

∠R≈16,330..≈16,3°

Explanation: