Question 6 Find angle Q 63 O 406 O 568 O 826 O 358 96 81 1 p

Question 6 Find angle Q 6.3 O 40.6 O 56.8 O 82.6 O 35.8 9.6 8.1 1 pts

p=8.1, q=6.3, r=9.6

by law of cosines

q²=p²+r²-2p*r*cos(Q)

6.3²=8.1²+9.6²-2*8.1*9.6*cos(Q)

39.6=65.61+92.16-155.52cos(Q)

155.52cos(Q)=65.61+92.16-39.6

155.52cos(Q)=118.17

cos(Q)=118.17/155.52

cos(Q)=0.759838

Q=40.55^O

Q=40.6^O