Use a double-angle formula to

Double Angle Formula.If the double angle formula for cos2(u) = 2cos^2(u)-1, then write the double angle formula for cos2(u) in
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2. asked by jack
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Express as a single sine or cosine function (note: this is using double angle formulas)g) 8sin^2x-4 I just don't get this one. I
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2. asked by Alex
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Simplify the expression by using a Double-Angle Formula or a Half-Angle Formula.Sqrt(1-cos50/2)
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2. asked by Amanda
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simplfy the expression by double angle formula or a half angle formula.cos^2(x/2)-sin^2(x/2) 2sin(x/2)cos(x/2)
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2. asked by Amanda
3. 557 views
Simplify the expression by using a Double-Angle Formula or a Half-Angle Formula.�ã((1-cos50)/2)
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2. asked by John
3. 590 views
I really need help on this questionSimplify the expression by using a Double-Angle formula or a Half-Angle Formula cos^2
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2. asked by Andrea
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simplify the expression by using a double angle formula or a half angle formula:a. 2 tan 7 degrees /1-tan^2 7 degrees b.2 tan 7
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2. asked by Kaylee
3. 878 views
Use a double-angle formula to rewrite the expression.6 sin x cos x
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2. asked by Syndra
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We begin by setting t=sin 18 degreeswe weill think of t an an "unknown" angle and solve to get the exact value. Use a double
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2. asked by Anonymous
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for sin2x+cosx=0, use double-angle or half-angle formula to simplify the equation and then find all solutions of the equation in
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2. asked by bob
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