Simplify the expression by using a Double-Angle Formula or a Half-Angle Formula. (a)     2 sin(11°) cos(11°) (b)     2 sin(4?) cos(4?)

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Q: show that the equation cos2x(tan2 2x+ 3)+3=0 can be expressed as  2cos2 2x + 3cos2x+1=0

A: show that the equation cos2x(tan2 2x+ 3)+3=0 can be expressed as  2cos2 2x + 3cos2x+1=0

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A: suppose that cos theta=2/5 calculate tan theta in the following two cases

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Q: Suppose that cos θ = 2/5. Calculate tan θ in the following two cases: (a) 0 <θ< π/2 and (b) π<θ< 2π.

A: Given cosθ=25,                      (1)We know that ,sin2θ+cos2θ=1sin2θ+252=1Subtract  252 on both…

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Q: Using the Law of Sines to solve the all possible triangles if ∠A=102∘,a=35,b=13.∠A=102∘,a=35,b=13.

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A: Since, you have posted a question with multi-parts. As per guidelines we"ll solve only first three…