Answer:
B : 5/6
Step-by-step explanation:
By doing some simple fraction, this would be the only thing that'd be correct!
Answer:
It's the law of cosines
Step-by-step explanation:
law of cosines states that 
so we know that a = 7, b = 4, and alpha would be 135 degrees, so just plugging it in gets us 49+16-2*7*4*(-0.707) = 65 + 39.59 = 104.59
Answer:
you got the answer right it's 49
Multiply 4 and 30. If the answer is 120, then you are correct.
90 degrees plus 49 degrees is 139 degrees 180 degrees minus 139 degrees = 41 degrees
90+49=139
180-139= 41
answer 41 degrees