Question

URGENTLY NEED HELP!!!!!!!!

Answer 1

x = 31.3°

Explanation:

`cos (A) = (b^(2) + c^(2) - a^(2) )/(2bc)`

here a = 8 , b = 11 , c = 15

using the formula:

cos(x) = (11² + 15² - 8²) / ( 2 * 11 * 15)

cos(x) =
`(47)/(55)`

x =
`cos^(-1) ((47)/(55) )`

x = 31.3°