Find the exact value of the expression or state that it does not exist.cos-1
A. 
B. 
C. - 
D. 
Answer: B
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Which of the following is not true, when drawing, measuring, or classifying angles? ?
A. ?An angle includes two rays that share an endpoint. B. ?A protractor is used to measure lengths of lines but not angles. C. ?A degree measurement of a protractor measures angles from 0? to 180?. D. ?A protractor may do some of the same things as a ruler. E. ?There are 360? in a full circular rotation.
Solve the equation involving fractions.
+ 
= 5
A. - 
, 10
B. 2, 10
C. - 
, -10
D. 
, -10
Write a formula for the general term (the nth term) of the sequence. Then use the formula for an to find the twelfth term of the sequence.3, 12, 21, 30, . . .
A. an = 6n - 2; a12 = 70 B. an = 6n - 9; a12 = 63 C. an = 9n - 6; a12 = 102 D. an = 9n - 2; a12 = 106
Find the coordinates of the points shown on the graph.
A. C: (-6, 5), D: (-3, 5) B. C: (-6, -3), D: (5, -3) C. C: (-6, 5), D: (5, -3) D. C: (5, 4), D: (-3, 5)