Compute the exact values for the following expressions....

Radicals should be simplified but not approximated...

1. 16sin^3(60°) - 4tan(120°)


2. 6cos(315°)+8sin(270°)

Please show me how you got the answer, since I can't approximate radicals, that means no calculator :(

1. 16(sin(π/3))^3 - 4tan(2π/3)
= 16(√3 / 2)^3 - 4(-√3)
= 16((3√3) / 8) + 4√3
= 2(3√3) + 4√3
= 6√3 + 4√3
= 10√3

2. 6cos(7π/4) + 8sin(3π/2)
= 6(√2 / 2) + 8(-1)
= 3√2 - 8

Hope this helps ;D