(b) /(cos æ)* sin a da

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A: We use substitution method

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A: To integrate

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A: Given query is to find the value fo indicated angle.

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A: Given : sinα = cosα + 40

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A: We will find the  required value

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A:

Q: Find cos A when sing 12 and A is in the second quadrant. %3D 5/13 -5/12 -5/13

A: We have, sinθ = 1213,  θ is in the second quadrant To evaluate: The value of cosθ.

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A:

Q: If cos A with A in QIV , find sec %3D a. sec | b. sec 2. с. sec A d. sec 4-5 %3D A sec e. A2 1/2 II…

A: Since you are asking multiple questions. We are answering only the first question. Given, cosA=18…

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A: We need to evaluate, ∫cos2xsin3xdx

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A: The given equation is r=sinθ+2cos2θ. Note that r=sinθ+2cos2θ is a polar curve.

Q: Show that sin (A + B) + sin (A – B) = 2 sin A cos B. -

A: Disclaimer: Since you have asked multiple questions, we will solve the first question for you. If…

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Q: evaluate the integral.

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A: Consider the given expression as y=AcosBx Here, y is displacement from the mean position.

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A: We will answer the first question specified by you. Please resubmit the question specifying the one…

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A: To find the root of the equation, we need to put our equation equal to 0. Put F(x)=0

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A: r=1-2sin2(θ+π3)

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A:

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A: The objective is to find  (a)cos(α + β)  (b)  sin(2α)

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A: Given integral is∫0∞e-a2x2cosbxdx=π2ae-b24a2, a>0The integral is derived as shown below

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A:

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A: To verify the identity

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A: Given that: cosπ6

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A: Hey, since there are multiple questions posted, we will answer first question. If you want any…

Q: What is the formula for sin (A/2)

A: Formula of sin(A/2)

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A:

Q: Evaluate * cos (e + a?) dx 24 +1

A: To find: The integral ∫44cose3x+x2x4+1dx Concept used: ∫aaf(x)dx=0