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Find the Area: f(x)=sin6x and g(x) = cos 12x, pi/12 less than or euqal to x is less than or equal to pi/36
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(a) Find the indeﬁnite integrals of the following functions. (i) f (t) = 6 cos(3t) + 5e^−10t (ii) g(x) = 2112x^3/ x (x > 0) (iii) h(u) = cos^2( 1/8 u) (b) Evaluate: (this big F sign at the start, 5 at the top and 1 at the
asked by maths on March 24, 2008 
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Can someone please check my answers! 2. Find value of cos(255degrees)cos(105degrees) root3  2 / 4 3. cos(pi/12)  cos(5pi/12) Is it root3/4? 4. Use the appropriate sumtoproduct formula to rewrite the expression sin6x  sin9x I
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1. use the suitable producttosum formula to rewrite the following expression: sin(13x/2)sin(5x/2) 2. Find value of cos(255degrees)cos(105degrees) is it 1/4? 3. cos(pi/12)  cos(5pi/12) root3/4? 4. Use the appropriate
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pleaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaasw help can you pleaaaaase help me find the area between y=cos(4x) and y=1cos(4x) 0
asked by aymal on May 2, 2010 
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1) The sides of the triangle shown increase in such a way that (dz/dt=1) and (dx/dt=(3dy/dx)) At the instant when x = 12 and y = 5, what is the value of dx/dt? 2) Let f(x) = x^3 − 4. Which of these is the equation for the normal
asked by Prince@18 on December 17, 2016 
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Write the expression as a single trigonometric functions: cos 6x cosx  sin6x sin x if you could do it step by step? also... How do I prove that sin(90deg + theta) = cos(theta)?? also step by step so i may learn?
asked by Anonymous on March 24, 2014 
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8 sin²(3x) cos²(3x) = 2 [2 sin(3x) cos(3x)]² = 2 [sin(6x)]² = 2[1  cos(12x)]/2 = 1  cos(12x)
asked by Carry on February 23, 2009 
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write sin4xcos2 as the sum or difference of two functions. answers: 1/2(cos6x+cos2x), 1/2(cos2xcos6x), 1/2(sin6x+sin2x), sin6xsin2x
asked by jake on May 17, 2012 
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write sin4xcos2 as the sum or difference of two functions. answers: 1/2(cos6x+cos2x), 1/2(cos2xcos6x), 1/2(sin6x+sin2x), sin6xsin2x
asked by kate on May 17, 2012