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Given that cos(3x)=acos^3(x)−bcos(x) is a trigonometric identity, what is the

Given that cos(3x)=acos^3(x)−bcos(x) is a trigonometric identity, what is the value of a+b
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2. asked by Tony
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Given that cos(3x)=acos^x−bcosx is a trigonometric identity, what is the value of a+b ?
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2. asked by Tony
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Verify that the trigonometric equation is an identity. 1/2 sin 2 x − sin^2x over sinxcos2x = 1 over sinx+cosxVerify that the
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2. asked by Ricky
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Georgina is told that an angle has a sine of sqrt 5/5 and is in quadrant 2. Use the Pythagorean identity sin^2(0) + cos^2(0) =1,
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2. 27 views
Electrons in an oscilloscope are deflected by two mutually perpendicular electric fields insuch a way that at any time t the
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2. asked by Ashik
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Georgina is told that and angle has a sine of √5/5 and is in quadrant II. use the Pythagorean identity sin^2(0) + cos^2(0) =
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2. 94 views
Steph is told that an angle has a sine of 1/4 and is in Quadrant II. Use the Pythagorean identity sin^2(θ)+cos^2(θ)=1 , the
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What is the tangent for an angle that has a cosine of −1/7√ and is in Quadrant III? Use the Pythagorean identity
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2. 87 views
Blake is told that an angle has a cosine of −16√and is in Quadrant III. Use the Pythagorean identity sin2(θ)+cos2(θ)=1 ,
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2. 6 views
Steph is told that an angle has a sine of 1/4 and is in Quadrant II. Use the Pythagorean identity sin^2(θ)+cos^2(θ)=1 , the
1. 1 answer
2. 95 views