Answer:
sin50 =wx÷wv = 0.766÷1 = 6÷wv = 0.766wv = 6 => wv = 6÷0.766 => wv = 7.8328 ^-^
21. P=118
21. Q=142
22. P=120
22. R=60
22. S=60
Step-by-step explanation: