Solve the problem.Prove that  = sin2 ? by expressing each function in terms of its x, y, and r definition.

What will be an ideal response?


 = 
 
 
 
 
  2
 sin2 ?

Mathematics

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The function s = f(t) gives the position of a body moving on a coordinate line, with s in meters and t in seconds.s = 2t - t2, 0 ? t ? 2Find the body's speed and acceleration at the end of the time interval.

A. 2 m/sec, - 2 m/sec2 B. 6 m/sec, -4 m/sec2 C. -2 m/sec, - 2 m/sec2 D. 2 m/sec, -4 m/sec2

Mathematics

Verify the identity.cos(? - ?) - cos(? + ?) = 2 sin ? sin ?

What will be an ideal response?

Mathematics

Find the root. Assume that all variables represent nonnegative real numbers. 

A. 9x4y2 B. not a real number C. 3x2y4 D. 4.264x2y4

Mathematics

Determine what percent of the figure is shaded.

A. 60%
B. 66%
C. 40%
D. 30%

Mathematics