Determine the exact value of the expression without the use of a calculator.sin 75° cos 15°

A.
B.
C.
D.


Answer: C

Mathematics

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Solve the problem.A wheel is rotating at 3 radians/sec, and the wheel has a 70-inch diameter. To the nearest foot per minute, what is the velocity of a point on the rim?

A. 530 ft/min B. 520 ft/min C. 515 ft/min D. 525 ft/min

Mathematics

Solve the problem.If a and b are the lengths of the legs of a right triangle and c is the length of the hypotenuse,  How is dc/dt related to da/dt and db/dt?

A.  = 2a + 2b
B.  = a2 + b2
C.  = 
D.  = a + b

Mathematics

Write the expression for the general (or nth) term, an, of the geometric sequence., 1, 2,. . .

A. an = (2)n - 1
B. an =  + 2(n - 1)
C. an = ()n - 1 + 
D. an =  + n - 1

Mathematics

Determine whether the ratios are proportional. and  

A. Yes B. No

Mathematics