Solve the problem. Express 15° as a - ß, where cos a and cos ß are known exactly. 47° - 32° 80° - 65° 43° - 28° 45° - 30°

Q: Give the exact value of CoS 2

A: We have to find the values of angle at which the value of cosine is -32.

Q: Find x cos 2.xdr

A: If , then the independent variable x is called the input of the function and the dependent variable…

Q: 2. Identify each of the following polar equations and state the correct graph: a. r 2-2 cos 0 i. ii.…

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Q: Determine the exact value of cos(120)° V3 2

A: The given question is from the trigonometry and can be solved as shown below.

Q: --cos(45")? Explain. 3. Does cos

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Q: y=2 cos 0+1

A:

Q: find general solution for:  1. cos2 x-3=-2cosx

A: cos2 x -2cosx -3 =0

Q: Determine the exact value of cos T + TT 3 6

A:

Q: Plot each complex number: 1. -3i 3 2. 1. -2 -1 5. -11 -2

A: In complex plane  z = x + iy    = (x,y)

Q: Compute the exact value of cos (-7π/ 8) . Show work and do not use a calculator.

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Q: r=4 cos(309 -44

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Q: Use the double-angle formula for cosine to compute cos(20) given cos( os(0) = where 0 <0<. 79 90

A: Given.

Q: -1+3 cos 0 = 3V3 - 1

A: