Trigonometry
posted by Emma on .
Prove that
tanx+cotx=2sec(2x)
Thank you! :)

LS = sinx/cosx + cosx/sinx
= (sin^2 x + cos^2 x)/sinxcosx
= 1/(sinxcosx)
= 2/(2sinxcosx)
= 2/sin (2x)
= 2csc (2x)
Your RS = 2sec(2x) which is incorrect
Did you have a typo? 
Yes I had a typo. Thank you!!
(I don't know how to respond to answers besides this....) 
Why