- #1

- 7

- 0

tan(x)-sin(x)/2tan(x) = sin^2(x/2)

1-sin(x)/2 = sin^2(x/2)

(That's as far as i've gotten on this one...but i don't know if i'm in the right direction or what to do next?)

2)

sin2x = 1 / tanx + cot2x

2sin(x)cos(x) = ''

sin(x) * cos(x) * sin(x) = ''

(The same from #1 applies to this problem)