b = 3² + 5² - 2(3)(5)cos(53.13)
b = 9 + 25 - 30cos(53.13)
b = 34 - 30(0.6)
b = 34 - 18
b = 16
Therefore, b ≈ 16.
Use the stated variant of the Law of Cosines, b2=a2+c2−2ac⋅cosB
, to find the value of side b in a right triangle, where a=3
, c=5
, and B=53.13
. Round your answer to the nearest whole number.(1 point)
b=
1 answer
1 answer