Which is the co-function of sin 25° deg 16'48"? a. cos 25.28 deg b. cos 64.72 deg cos 25 deg 16'48" d. cos 64.75 deg C.

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Q: 25° 65° 30 ft

A:

Q: A 5 4 B 3 C

A: Given :

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A:

Q: Use reference angles to find the exact value of the expression cos 3π/4. Do not use a calculator.

A: The given angle is in second quadrant, and the value of cosine is negative in second quadrant.

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A: To find the value of: cos (15°), sin (15°), and tan(15°)   Using trigonometric formula:

Q: Find the measure of cos-1 (-0.5) in degrees and radians.

A: cos-1-0.5

Q: 3. Evaluate without calculator a. cos 120 degree. b. sec (pi/3) c. cot ( 19 pi / 6)

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Q: In the diagram, AFED tan D = is a right triangle. If 15 cos D E 8. D , which ratio equals

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Q: Find the cofunction A. Sin32 degree B. Sec (pi/4) C. Cos(pi/3) D. Cot19 degree

A: Two trig functions are ​cofunctions​ if one of them has the "co-" prefix in front of it.  like as :…

Q: Find the value of sect given that 3 , terminal point of tis in sint Quadrant IV

A: Given Data: The value of the sine of angle t is: sint=-35 The value of the cosine of angle t is,…