Use the information given about the angle ?, to find the exact value of the indicated trigonometric function.sin ? = - 
, ? in quadrant IV Find cos 2?.
A. - 
B. 
C. - 
D. 
Answer: C
Mathematics
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Write a numerical expression for the phrase and simplify it.The sum of 7 and -7, decreased by 8
A. [7 + (-7)] + 8; 8 B. [7 - (-7)] - 8; 6 C. [7 + (-8)] + 7; 6 D. [7 + (-7)] - 8; -8
Mathematics
Solve.The time T necessary to make an enlargement of a photo negative varies directly as the area A of the enlargement. If 80 seconds are required to make a 5-by-4 enlargement, find the time required for a 6-by-5 enlargement.
A. 120 sec B. 90 sec C. 150 sec D. 180 sec
Mathematics
Graph the linear equation, using any appropriate method.x = 3
A. 
B. 
C. 
D. 
Mathematics
Convert to an exponential equation.log6 36 = 2
A. 636 = 2 B. 362 = 6 C. 62 = 36 D. 26 = 36
Mathematics