SOLUTION: 2sin^2x-1=0 solve step by step

SOLUTION: 2sin^2x-1=0 solve step by step

Algebra.Com

Question 1010316: 2sin^2x-1=0
solve step by step
Answer by lwsshak3(11628) (Show Source): You can put this solution on YOUR website!
2sin^2x-1=0
2(1-cos^2x)-1=0
2- 2cos^2x-1=0
-2cos^2x+1=0
1=2cos^2x
2cos^2x=1
cos^2x=1/2
cosx=�√(1/2)=�√2/2
x=45, 135, 225 and 315 deg (from 0 to 2pi)

RELATED QUESTIONS
Please solve 2Sin(3x)+1=0 Will you please show each step, thank you.... (answered by lwsshak3)

Please help me solve this idetity step by step (1+tan^2x)/tan^2x= 4/3 (answered by Theo,Alan3354)

How to solve 2x^2 - 3x -2=0 please do it step by... (answered by stanbon,jim_thompson5910)

x^3-2x^2-3x>0 solve algebraically.Please show me step by step (answered by richwmiller)

step by step help to solve... (answered by fractalier)

Help step by step to solve and graph... (answered by Boreal)

Please solve -4(2x-3)>5x-14 step by step. (answered by Alan3354)

please solve step by step (answered by math_helper)

how do you solve this problem. step by step... (answered by Earlsdon)