Provide an appropriate response.True or false: Since tan ? = 
, if tan ? = 
with ? in quadrant I, then 
and cos ? = 3. If false, explain why.
What will be an ideal response?
False; cos ? cannot equal 3. We know that the ratio of sin ? to cos ? is 
, but this does not give us specific values for sin ? and cos ? individually.
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Set the viewing rectangle of your graphing calculator to 
by 
to solve the problem.Graph the following set of parametric equations for 0 ? t ? 2? and identify the letter of the alphabet that the graph resembles.x1 = -2.5 + 1.2 cos(t),y1 = -2 + 1.2 sin(t)x2 = -2.5 + 0.6t/?,y2 = -2.6 - 0.3t/?
A. a B. Q C. G D. O
Solve the equation.
= 
+ 
A. 
B. 
C. {16}
D. 
Suppose 500 coins are tossed. Using the normal curve approximation to the binomial distribution, find the probability of the indicated results.Exactly 250 heads
A. .040 B. .016 C. .031 D. .032
Factor the difference of two squares.144x2 - 25y2
A. (12x - 5y)2 B. (12x + 5y)2 C. (12x + 5y)(12x - 5y) D. prime