If you plug in arcsin 7/11 in calculator, you get 39.5212
Then Subtract 39.5212 from 90 which is 57.4788
Then put cos(57.4788) in calculator and you should get something like 0.636363
That answer is also equivalent to 7/11
4th option is correct xy=-10
if this was to u plzz mark me the brainliest
i think it is everything has to equal 180 so, if i correct 4=c. 6=d. 8=a. 7=b. and the last question would be c. because they are parallel lines and they are congruent.
the reason everything has to equal to 180 is because that is how it works. i'm guessing that is its rule. 4 and 8 are congruent and parallel so, that would be 30+30 because they have the same number. it would equal 60. 6 and 7 are congruent and parallel so, that would be 30+30 because they have the same number. it would equal 60. 60+60 is 180. so, now you have your answer