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PLEASE HELP Look at the proof showing sin^4x=3-4cos2x+cos4x/8. Which expression will complete the fourth step of the proof? sin^4x=(sin^2x)^2 sin^4x=(1-cos2x/2)^2 sin^4x=1-2cos2x+cos^22x/4 sin^4x=? A.)
answered
Feb 9, 2019
Mathematics
high-school
4
votes
14.0k
views
Which region of the Sun is typically about 6,000 C?
answered
Feb 3, 2019
Physics
middle-school
7
votes
179k
views
A song by Panic! at the _____ on the very happy album called ______.___ Back to the ______where we began Feeling as ____as ______can, you know Yeah we're feeling so good Picking up things we shouldn't
answered
Jul 24, 2018
Arts
middle-school
4
votes
218k
views
Which influence on food involves the amount of time that you have to select and prepare a meal? A. advertising B. cost C. personal taste D. convenience
answered
Jul 6, 2018
Health
high-school
5
votes
136k
views
2xsquare+12x+19 Find the minimum value of f (x)
answered
Apr 28, 2018
Mathematics
high-school
6
votes
108k
views
Simplify the expression. (1.08×10−3)×(9.3×10−3)÷0.1
answered
Mar 11, 2018
Mathematics
middle-school
4
votes
79.8k
views
How can astronomers use rocks from the Moon to estimate the age of the solar system?
answered
Jan 10, 2018
Physics
high-school
3
votes
233k
views
Alexander the great invaded Anatolia, Which today is known as
answered
Dec 26, 2017
History
high-school
4
votes
126k
views
Which statement most likely left her audience with a lasting impression about the need for change?
answered
May 21, 2017
History
high-school
5
votes
205k
views
A taxable explanation that's supported or refute it is called an
answered
Apr 26, 2017
Physics
high-school
3
votes
145k
views
Which of the following terms could be applied to the Soviet Union during the Cold War? A. capitalist B. communist C. democratic D. personal freedom
answered
Feb 16, 2017
History
high-school
4
votes
192k
views
Which of these numbers is between 1 and 3/5
answered
Jun 20, 2016
Mathematics
high-school
3
votes
226k
views
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