Mathtrigonometry
posted by Michael .
Several questions from my homework, any are appreciated. Thanks!
Solve:
1) sinxtanx=0
2) 3csc^2x=4
Find all solutions within (0,2pi)
3) cos4x(cosx1)=0
4) cos4x7cos2x=8
Use inverse functions where necessary to find solutions from 0 to 2pi
5) sin^2x2sinx=0
Find the exact value of the tangent of the angle
6) (25pi)/12=(11pi)/6+(pi/4)
Respond to this Question
Similar Questions

Math
How do I solve this? tan^2x= 2tanxsinx My work so far: tan^2x  2tanxsinx=0 tanx(tanx  2sinx)=0 Then the solutions are: TanX=0 and sinX/cosX = 2 sin X Divide through by sinX: we have to check this later to see if allowed (ie sinX 
maths
hey, i would really appreciate some help solving for x when: sin2x=cosx Use the identity sin 2A = 2sinAcosA so: sin 2x = cos x 2sinxcosx  cosx = 0 cosx(2sinx  1)=0 cosx = 0 or 2sinx=1, yielding sinx=1/2 from cosx=0 and by looking … 
math
solve each equation for 0=/<x=/<2pi sin^2x + 5sinx + 6 = 0? 
Trigonometry
4. Find the exact value for sin(x+y) if sinx=4/5 and cos y = 15/17. Angles x and y are in the fourth quadrant. 5. Find the exact value for cos 165degrees using the halfangle identity. 1. Solve: 2 cos^2x  3 cosx + 1 = 0 for 0 less … 
trig
I need to find all solutions of the given equations for the indicated interval. Round solutions to three decimal places if necessary. 1.) 3sin(x)+1=0, x within [0,2pi) 2.) 2sin(sq'd)(x)+cos(x)1=0, x within R 3.) 4sin(sq'd)(x)4sin(x)1=0, … 
Trigonometry
Find all solutions of the equation in the interval [0,2pi] algebraically. sin^2x + cosx + 1 = 0 
Trigonometry Check
Simplify #3: [cosxsin(90x)sinx]/[cosxcos(180x)tanx] = [cosx(sin90cosxcos90sinx)sinx]/[cosx(cos180cosx+sinx180sinx)tanx] = [cosx((1)cosx(0)sinx)sinx]/[cosx((1)cosx+(0)sinx)tanx] = [cosxcosxsinx]/[cosx+cosxtanx] = [cosx(1sinx]/[cosx(1+tanx] … 
PreCalculus
Find all solutions to the equation in the interval [0, 2pi) cos4xcos2x=0 So,this is what i've done so far: cos4xcos2x=0 cos2(2x)cos2x (2cos^2(2x)1)(2cos^2(x)1) No idea what to do next. 
Math
Can I please get some help on these questions: 1. How many solutions does the equation,2sin^2 2 θ = sin2θ have on the interval [0, 2pi]? 
Math, please help
Which of the following are trigonometric identities?