nurzierah27 nurzierah27
  • 03-11-2019
  • Mathematics
contestada

Prove, cotx -tanx= 2 cot2x

Respuesta :

2002hemal
2002hemal 2002hemal
  • 03-11-2019

Step-by-step explanation:

cotx- tanx= 2cot2x

L.H.S

cosx/sinx- sinx/cosx

(cos²x- sin²x)/ sinxcosx

[ cos²x-(1-cos²x)]/sinxcosx

( 2cos²x-1)/sinxcosx

2cosx/ 2sinxcosx

2cot2x

Answer Link

Otras preguntas

what are the disadvantages of being unicellular
how many countries are there
what does exposition mean
how many words are in the english language
the Quade family drove 920 miles in 3 days they drove the same number of miles the first 2 days and then drove 50 miles the third day how many miles did they dr
if you're not told otherwise, who is your audience when you are writing? A Your Friends B.The teacher D.The reader I know its not C. Yourself because I got it w
three human skeletons in a single grave were recovered at
The amount in a savings account increased from 200 to 216. What was the percent of increase?
Which pronoun best completes the sentence? How is the pronoun used? Are Jenny and __________ walking to the soccer fields this afternoon? A. us; subject
when is the first day of spring in 2016