SOLUTION: Please if someone could kindly help me with this question. Thank you.
Solve for all possible x in (o, 360 degrees): 2 sin x = 2 cos 2x
Algebra.Com
Question 623700: Please if someone could kindly help me with this question. Thank you.
Solve for all possible x in (o, 360 degrees): 2 sin x = 2 cos 2x
Answer by solver91311(24713) (Show Source): You can put this solution on YOUR website!
Use
To write:
Use the Pythagorean Identity
to write:
Let
Solve the quadratic. It factors, but clumsily; the quadratic equation will be faster.
Substitute back:
, giving you 2 values for
. Find the three angles in the given interval on the unit cirle that satisfy your two values for
Hint:
is the
-coordinate.
John

My calculator said it, I believe it, that settles it
RELATED QUESTIONS
Hi, can you please help me with this question; Solve the following equation for x <_ x <_ (answered by lwsshak3)
Please help me with this problem. I need to solve the equation for solutions over the... (answered by Gogonati)
Please help me Solve this equation on [0,360)
sin^3 (x) = sin(x)
Thank you in... (answered by Theo,greenestamps)
Could someone please help me with this problem?
Solve for the indicated variable:... (answered by stanbon)
Please if someone could solve this inequality.
{{{ sin ( x )>abs(cos( 2x )) }}}
Thank... (answered by solver91311)
Hi,
Please help me solve this non-calculator question.
First the question asks you to (answered by Theo)
Sin^2 x= cos^2 x for 0 degrees less than or equal to x which is less than 360 degrees... (answered by Alan3354)
Can someone please help me with this problem?
If csc(x)=6, for 90degrees < x <... (answered by KMST,Gogonati)
Can someone please help me with this question.
x/x²+1 and solve for f(-x)
Thank you (answered by rothauserc)