Mathematics, 30.07.2019 11:50 ninilizovtskt
Verify the identity, cos 4u = cos^2(2)u - sin^2(2)u no answer choices, free response, i need !
Answers: 1
![\bf \textit{Double Angle Identities} \\ \quad \\ sin(2\theta)=2sin(\theta)cos(\theta) \\\\ \quad \\ cos(2\theta)= \begin{cases} \boxed{cos^2(\theta)-sin^2(\theta)}\\ 1-2sin^2(\theta)\\ 2cos^2(\theta)-1 \end{cases} \\ \quad \\\\ tan(2\theta)=\cfrac{2tan(\theta)}{1-tan^2(\theta)}\\\\ -------------------------------\\\\ cos(4u)=cos^2(2u)-sin^2(2u) \\\\\\ cos^2(2u)-sin^2(2u)\implies cos[~~2~(2u)~~]\implies cos(4u)](/tpl/images/0150/4000/38872.png)
Another question on Mathematics
Mathematics, 21.06.2019 21:30
A(1,1) b(-3,0) c(-4,-1) d(3,-2) drag it to correct position
Answers: 2
Mathematics, 22.06.2019 01:30
The diameter of the moon is about 3500 km. approximate the surface area of the moon using the formula for the surface area of a sphere, s = 4? r^2. write your answer in scientific notation.
Answers: 3
You know the right answer?
Verify the identity, cos 4u = cos^2(2)u - sin^2(2)u no answer choices, free response, i need !...
Questions
Mathematics, 17.11.2020 06:10
English, 17.11.2020 06:10
Computers and Technology, 17.11.2020 06:10
Mathematics, 17.11.2020 06:10
Mathematics, 17.11.2020 06:10
Mathematics, 17.11.2020 06:10
English, 17.11.2020 06:10
History, 17.11.2020 06:10
Biology, 17.11.2020 06:10
Health, 17.11.2020 06:10
Arts, 17.11.2020 06:10
Geography, 17.11.2020 06:10
English, 17.11.2020 06:10
