Find the exact value under the given conditions.Given sin ? = 
, with ? in quadrant II, and cos ? = 
, with ? in quadrant I. Find sin (? - ?).
A. - 
B. 
C. 
D. 
Answer: D
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Solve the equation by the zero-factor property.45n2 + 55n = 0
A. 
B. 
C. 
D. {0}
Solve the problem. Round results to an appropriate number of significant digits.The angle of elevation from a point on the ground to the top of a tree is 37.2°. The angle of elevation from a point 37.2 ft farther back to the top of the tree is 24.1°. Find the height of the tree.
A. 119.3 ft B. 40.5 ft C. 53.4 ft D. 90.6 ft
Graph the ellipse.2x2 + 5y2 - 24x + 70y + 307 = 0
A. 
B. 
C. 
D. 
Solve the problem.A square wave is built up from sinusoidal curves of varying periods and amplitudes. Graph the following function, which can be used to approximate the square wave.f(x) = src="https://sciemce.com/media/4/ppg__tttt0523191237__f1q18g5.jpg" alt="" style="vertical-align: -17.0px;" />0 ? x ? 4 
0 ? x ? 4 
A better approximation to the square wave is given by f(x) = 
Graph this function and compare the result to the previous graph. Adding another term will improve the approximation even more. Write this new function with four terms.
What will be an ideal response?