Recent content by Craig is Lege

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    Solve sin y = .814 - 7.718 * sin x: y = 24.079

    Homework Statement sin y = .814 - 7.718 * sin x Solve for y Homework Equations The Attempt at a Solution I know the answer to the solution is y = 24.079 (sin1.751x - .138) + 17.711 I do not know the work to get here though...
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    Deriving Trig Formulas: Solving Problem with Sin and Cos Identities

    i made progress, but hit a dead end again... sin^2x + cos^2x = 1 sin^2x + (cosx)(cosx) = 1 sin^2x + cos(-x)(cosx) = 1 sin^2x = 1 can anyone bring it home...
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    Finding Inverse of f(x)= x^2 + 2x -1

    thanks for the help...totally forgot about that trick.
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    Finding Inverse of f(x)= x^2 + 2x -1

    Homework Statement f(x)= x^2 + 2x -1 Homework Equations The Attempt at a Solution x + 1 = y ( y + 2 ) how do i get y alone
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    Determining the equation of a curve

    Homework Statement A curve is traced by a point P (x,y) which moves such that its distance from the point A (-1,1) is three times its distance from the point B (2,-1). Determine the equation. Homework Equations The Attempt at a Solution used distance formulas to find A is the...
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    Deriving Trig Formulas: Solving Problem with Sin and Cos Identities

    i think i posted in the wrong area...sorry...my bad
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    Deriving Trig Formulas: Solving Problem with Sin and Cos Identities

    hello. i need help deriving trig formulas. the first problem i most derive is 51. sin^2 x + cos^2 x = 1 i can use these identities: a. sin(-x) = -sinx b. cos(-x) = cos(x) c. cos(x+y) = cosxcosy - sinxsiny d. sin(x+y) = sinxcosy + cosxsiny thanks for any help
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    Deriving Trig Formulas: Solving Problem with Sin and Cos Identities

    hello. i need help deriving trig formulas. the first problem i most derive is 51. sin^2 x + cos^2 x = 1 i can use these identities: a. sin(-x) = -sinx b. cos(-x) = cos(x) c. cos(x+y) = cosxcosy - sinxsiny d. sin(x+y) = sinxcosy + cosxsiny thanks for any help