radomes.openskiesproject.org
MartynBH
MartynBH MartynBH
  • 10-06-2016
  • Mathematics
Answered

Verify the identities.


cos(4u) = cos^2(2u) - sin^2(2u)

[cot^2(x)/csc(x)+1] = {1-sin(x)/sin(x)]

sin(x+ pi/2)=cos(x)
Plz help.

Verified Answer :

nobillionaireNobley
nobillionaireNobley nobillionaireNobley
  • 15-06-2016

\(cos(4u)=cos(2u+2u) \\ =cos(2u)cos(2u) - sin(2u)sin(2u) \\ = cos^{2} (2u)- sin^{2} (2u)\)

Answer Link

Related Questions

what can 118n be simplified as
Complications from genital herpes include A recurrent painful sores B psychological distress C possible transmission to baby for pregnant women D all of the abo
Energy sustainability can best be achieved by using
Master I said this sayings hard for me III 12 This sentence primarily reflects the role of Dante as Pilgrim Dante as Poet Virgil as Guide Virgil as Teacher
What is the denotation of the word snake
Base your answers to questions 42 through 44 on the mineral chart below and on your knowledge of Earth science The mineral chart lists some properties of five m
A students work to simplify and combine radicals is shown below Select the statement which best applies to the sample mathematical work Given 45028 I observe th
What is the strip of dry grassland on the southern border of the sahara desert
Why did charlie sheen leave two and a half me
A radius is a segment that connects any point on the circle to the center of that circle True or False