Question

Write the expression below as a single real number. Do not use decimal approximations.

sin^2(-π/3)cos(7π/3)-2tan(-π/6)

Answer 1

I wrote:
\[(-\sqrt{3}/2)^2(1/2)-2(-1/\sqrt{3})\]

Answer 2

Looks good, just simplify that expression a little.

Answer 3

\[Answer = \frac{16\sqrt{3}+9}{24}\]

Answer 4

Just looked weird and I wanted to make sure I was doing my math right.