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: A

Mathematics

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Find the first term and the common difference of the arithmetic sequence described. Give a formula for the nth term of the sequence.3rd term is 19; 8th term is 59

A. a = 3; d = 8; an = 8n - 5 B. a = 16; d = 8; an = 8n + 11 C. a = 11; d = 8; an = 3n + 8 D. a = 3; d = 8; an = 8n + 3

Mathematics

Solve the inequality graphically. Express the solution in set-builder notation.-4(6x + 4) < -28x - 32

A. {x > -4}
B. {x < -4}
C. {x > -28}
D. {x < -28}

Mathematics

If the following is a polynomial function, then state its degree and leading coefficient. If it is not, then state this fact.f(x) = 

A. Degree: 8; leading coefficient: 4 B. Degree: 2; leading coefficient: 4 C. Degree: 4; leading coefficient: 2 D. Not a polynomial function

Mathematics

Decide whether the statement is true or false.The circle with equation x2 + y2 = 9 has center at (3, 3).

A. True B. False

Mathematics