Question

ln ABC B 30AB11 cm and BC60 find Ac​

Answer 1

Answer:

50.77cm

Explanation:

Using Cosine rule ,we have,

b^2=a^2+c^2- 2×a×c×cos B

Let,AB=a=11cm,BC=c=60cm and AC=b

b^2=11^2 +60^2 -2×11×60×cos 30degree

b^2=121+3600-1320×√3/2

b^2=3731-660√3

b^2=2577.8

b^2=50.77cm

Hope this helps you......