8sin^2(x)+6sin(x)-9=0 simplify

  1. 8sin^2(x)+6sin(x)-9=0 simplify
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    2. frances asked by frances
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  2. 6sin(2x)+3=0How do you find the smallest value of x in the interval 0≤x≤π for which y=0? My work so far: 6sin(2x)=-3
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    2. Autumn asked by Autumn
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  3. Prove the identity:4x=1-8sin^2x+8sin^4x
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    2. PRELUDE asked by PRELUDE
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  4. How do I take the derivative of 3(sin(x))^2 cos(x)? Are these right--> 3(sin(x))^2 *-sin(x) + cos(x)*6sin(x)*cos(x)=(-3sin(x))^3
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    2. Anonymous asked by Anonymous
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  5. If we are given 8sin((pi/6)(x+2))+16=20the answers are -1 and 3 because 1/2 can be pi/6 or 5pi/6. However, if y = 10
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    2. Ashley asked by Ashley
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  6. Please take a look at DEVON's trig equation at 9:14I must be missing something obvious. If the second had been 3sin 2x it would
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    2. Reiny asked by Reiny
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  7. a) Express f(theta) = 4cos theta - 6sin theta in the form r cos(theta + alpha)b) Hence find the general solution of the equation
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    2. Becky asked by Becky
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  8. 8sin^4(x)
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    2. Anonymous asked by Anonymous
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  9. 6sin(pi/6x)=5
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  10. 8sin^2x+sinxcosx+cos^2x=4
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    2. LiNnda asked by LiNnda
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