The figure shows an angle ? in standard position with its terminal side intersecting the unit circle. Evaluate the indicated circular function value of ?.Find tan ?.
A. - 
B. - 
C. 
D. - 
Answer: B
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Divide. Write the answer in lowest terms and as a whole or mixed number where possible.28 ÷ 
A. 21
B. 37
C. 
D. 7
Solve the problem.Persons taking a 30-hour review course to prepare for a standardized exam average a score of 620 on that exam. Persons taking a 70-hour review course average a score of 772. Find a linear function, S(t), which fits this data, and which expresses score as a function of time. Use this function to predict an average score for persons taking a 51-hour review course. Round your answer to the tenths place.
A. 692.5 B. 713.8 C. 704.0 D. 699.8
Find the distance d(A, B) between the points A and B.A(0, 2); B(8, 2)
A. 2
B. 64
C. 2
D. 8
Solve.The equation ?2 = tan-1 (?C/G) gives the phase angle of impedance in the parallel portion of a distributed constant circuit. Find ?2 if 
, C = 0.09 ?F/km, and 
A. 85.9° B. 1.5° C. 88.5° D. 89.4°