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trig question
Compute inverse functions to four significant digits. cos^2x=35cosx cos^2x + 5cosx 3=0 now you have a quadratic, solve for cos x using the equation cosx=(5 + sqrt (25 +12)/2 the back of the book says .9987+2kpi and
asked by Kate on April 16, 2007 
Trigonometry
Write equivalent equations in the form of inverse functions for a.)x=y+cos è b.)cosy=x^2 (can you show how you would solve) a.) x= y+ cos è cos è = xy theta = cos^1(xy) b.) cosy=x^2 cos(y) = x^2 y = Cos^1(x^2)
asked by anon on March 3, 2011 
Pre Calculus
Can someone help me solve this problem: cos^2x + 5cosx  2= 0 I am having trouble finding x
asked by Anonymous on February 5, 2009 
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Can someone help me solve this problem: cos^2x + 5cosx  2= 0 I don't know how to find x
asked by Anonymous on February 5, 2009 
Pre Calculus Repost Please Help
Can someone help me solve this problem: cos^2x + 5cosx  2= 0 I am having some trouble finding x
asked by Anonymous on February 5, 2009 
trig
it says solve for all real solutions, compute inverse functions to 4 sigfigs. cos^2x=35cosx Devon, what grade level are these questions from? I am having the same problems as with your 9:14 post. Please see my partial solution in
asked by Devon on April 16, 2007 
Trigonometry
How do I solve these? 1) 2sinxcosxcosx=0 2) cos^2(x)0.5cosx=0 3) 6sin^2(x)5sinx+1=0 4) tan^2(x)+tanx12=0
asked by . on April 18, 2010 
Trigonometry (repost Reiny)
at 1:35am I posted ; Write equivalent equations in the form of inverse functions for a.)x=y+cos theta b.)cosy=x^2 my answers were a.) x= y+ cos theta cos theta = xy theta = cos^1(xy) b.) cosy=x^2 cos(y) = x^2 y = Cos^1(x^2)
asked by anon on March 3, 2011 
Trigonometry(please Clarify)
I posted before ; Write equivalent equations in the form of inverse functions for a.)x=y+cos theta b.)cosy=x^2 my answers were a.) x= y+ cos theta cos theta = xy theta = cos^1(xy) b.) cosy=x^2 cos(y) = x^2 y = Cos^1(x^2) your
asked by anon on March 4, 2011 
precalc
Find the exact value of each expression, if it exists: the 1 are representing the inverse functions! (a) sin 1 (√2/2) (b) cos−1 (−1) (c) sin( sin−1 (π)) (d) cos−1(cos(−4π/ 3)) (e) tan−1
asked by help! on April 17, 2016