Question

Solve it fast. I will mark it as brainliest

Answer 1

Answer:

i got value of a as 480

,

Step-by-step explanation:

mark your r as branliest

Answer 2

Answer:

480 is the answer of this question.

Step-by-step explanation:

Cos A + Cos(240-a)=-cos(240-a)

240=-240+A

240+240=A

480=A

A=480