Use the information given about the angle ?, to find the exact value of the indicated trigonometric function.cos ? = - 
, ? in quadrant II Find sin 2?.
A. - 
B. 
C. - 
D. 
Answer: C
Mathematics
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Add or subtract. Simplify the answer.
- 
A. 
B. 
C. 
D. 
Mathematics
Solve the problem.An experimental model for a suspension bridge is built in the shape of a parabolic arch. In one section, cable runs from the top of one tower down to the roadway, just touching it there, and up again to the top of a second tower. The towers are both 12.25 inches tall and stand 70 inches apart. At some point along the road from the lowest point of the cable, the cable is 1.96 inches above the roadway. Find the distance between that point and the base of the nearest tower.
A. 21.2 in. B. 13.8 in. C. 21 in. D. 14.2 in.
Mathematics
Multiply and simplify.
? 
A. 
B. 
C. 
D. 
Mathematics
Simplify. Your answer should be in lowest terms.
+ 
A. 
B. 
C. 
D. 
Mathematics