Question

Verify. cscx-tan(x/2)=cotx

Answer 1

I want to do LHS--->RHS

Answer 2

HI!!

Answer 3

do you know your identities?

Answer 4

i guess you have to dredge up the formula for \[\tan(\frac{x}{2})\] which i can never remember

Answer 5

actually now that i look closer, i am pretty sure it is NOT and identity
lets try it with \(\frac{\pi}{3}\)

Answer 6

cscx = 1/sinx and tan(x/2) = 1-cosx/2 = sinx/1+cosx

Answer 7

\[\csc(\frac{\pi}{3})=2\]\[\tan(\frac{\pi}{6})=\frac{1}{\sqrt3}\]and
\[2-\frac{1}{\sqrt3}\neq \cot(\frac{\pi}{3})=\frac{1}{\sqrt3}\] so you cannot prove it

Answer 8

Thank you.