Question

Evaluate sin(-120) + cos(-120)

Answer 1

`\sin( - 120) + \cos( - 120) \\ \\ = - ( √(3) )/(2) + ( - 0.5) \\ \\ = - ( √(3) )/(2) - (1)/(2) \\ \\ = { \boxed{ - ( (1 + √(3) )/(2)) }}`

Answer: -1.366