(ii) Prove the identity (2 - 2 cos 0)(sin 0 + sin 20 + sin 30) -(cos 40 - 1) sin 0 + sin 40 (cos 0 – 1).

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A: As per bartleby guidelines we only give first question answers.

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Q: 8. Prove the following identity. cos30 = 4cos³0 – 3cos0

A: To prove the identity.

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A: We can find the answers as below.

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A: The solution is given below

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A: To evaluate the given trigonometric expression

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A: Since you have asked multiple questions in a single request, we would be answering only the first…

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A: Let's find.

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A: This question is based on Area of trapezoid formula.

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A: We know that time period of sin(x) and cos(x) both are 2π

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A: Note:- Since you have asked multiple question As per our policy, we will solve the first question…

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Q: 7) Find Possible Positive, Negative or Imaginary Zeros. f(x) = x* + 2x³ - 9x² - 2x + 8 %3D Count the…

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Q: Jinguna de las anteriores

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Q: ctg sqrt(3)/3 equals to 30 degrees? How to convert this arctg to degrees? what is the proccess? and…

A: we have to prove arctg(sqrt3/3)=30 degreearctan(33)=arctan13                         =arctan(tan30°)…

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A: We need to solve trigonometry problem.

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A: Given that three trigonometry equation  To find fundamental solution of the question

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A: Given :(4, −10, 3) and (1, 1, 5)

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A: Solution: 2 Let the height of the Narra tree = h

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A: We can interpret the function in the folowing steps.

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Q: (1 − i)6   Use de Moivre's Theorem to find the following. Write your answer in standard form.

A: Use de Moivre's Theorem to find the following. Write your answer in standard form.

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Q: Solve the ABC Triangle a = 77.8m c = 43.8m B = 16.7 degrees Find A, C, b

A: The Cosine rule: a2=b2+c2-2bc cosAb2=a2+c2-2ac cosBc2=a2+b2-2ab cosC   Given: a=77.8 m, c=43.8m,…

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