12. When using Sum and Difference Identities to find the exact value of cos 15 degrees, which of the following could be used? cos (45 - 30) csc (240 - 225) sin (45 - 30) sec (240 - 225)

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A: Here, 3 students are chosen from each senior, junior and sophomore.

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A: We know: cos(A) = cos(a) sin(B) sin(C) − cos(B) cos(C)             =cos(135°) sin(120°) sin(150°) −…

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A: f(x)=2x3-x2+2x-1

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A: Given  Triangle GIH is similar to triangle KJL.

Q: 2. (3x + 28)° TIA, ORTITUDO

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Q: FU

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Q: 9. Write 4x²y = 1 in Polar Form.

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A: Given query is to find the angle turned by the wheel.

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Q: 6. Evaluate the geometric series. 8. Esk-1 k= 1

A: To find the sum of the given geometric series.

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A: topic-trigonometric equations

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A: Given problems:- A) -16  B) 1+i√3  To find:- Two square roots of given complex numbers

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A: Solution is given below:

Q: Add or subtract as indicated. Then simplify your answer if possible. Leave your answer in terms of…

A: Solving the problem by doing adding both the terms.

Q: where did the 0.9520 come from?

A: ∠C= 180-43.188-29∠C =107.812°sin C =sin 107.812°          =0.9520That' show 0.9520 came in solving…

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Q: Assume that cos\theta =-(1)/(3) and \pi <\theta <(3\pi )/(2),  find the exact value of cos(\theta…

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Q: how did you get cos2x/ 1-cos2x = 3

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A: Law of sine is given by:  a/sinA = b/sinB = c/sinC Please note:  we are allowed to solve only one…

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Q: For the ordered pair, give three other ordered pairs with e between -360° and 360° that name the…

A: Here, the given polar coordinates are: r,θ=(-2,330°)

Q: se graphing technology(Des Mos Graphing) e to graph the functions y = cos(8) and y = sin(@) n the…

A: Topic:- trigonometry

Q: write coal, oil, natural gas or nuclear energy

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Q: Ex. 2: Bert makes deposits of $2000 semi-annually into an account that pays 4% interest, compounded…

A: Given problem:- Bert makes deposits of $2000 semi-annually into an account that pays 4% interest,…

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A: Using Half - angle identities, Find the exact value of tanπ/8. tan(θ/2) = sinθ/(1 + cosθ) Let , θ =…

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A: Note: As per company guidelines we are supposed to solve only 1 question. So, kindly repost the…

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A: Directly use the formula for the equation of plane when 3 points are given.

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Q: Write the complex number in trigonometric form r(cos 0+ i sin 0), with 0 in the interval [0°,360°).…

A: r=a2+b2 here a = 1 b = 3

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A: Consider the given figure :