Cosine Law (Unknown side - SAS) $a^2=b^2+c^2-2(b)(c)(\cos A)$

  1. 1
    Find $x$.
    ( trigonometry / trig )figure
  2. 2
    Find $b$.figure
  3. 3
    Find $a$.figure
  4. 4
    Solve the triangle.figure
  5. 5
    Solve the triangle.figure

$$e=mc^2$$