To find the value of the expression 2sin(-π/2) + 4cos(2π/3), we can first evaluate sin(-π/2) and cos(2π/3) separately.
sin(-π/2) = -1cos(2π/3) = -1/2
Now, substitute these values back into the expression:
2(-1) + 4(-1/2)= -2 - 2= -4
Therefore, the value of the expression 2sin(-π/2) + 4cos(2π/3) is -4.
To find the value of the expression 2sin(-π/2) + 4cos(2π/3), we can first evaluate sin(-π/2) and cos(2π/3) separately.
sin(-π/2) = -1
cos(2π/3) = -1/2
Now, substitute these values back into the expression:
2(-1) + 4(-1/2)
= -2 - 2
= -4
Therefore, the value of the expression 2sin(-π/2) + 4cos(2π/3) is -4.