Find all values of ? in [0°, 360°) that satisfy the equation.
tan 
= -1
A. {150°}
B. {120°}
C. {330°}
D. {300°}
Answer: D
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Solve the problem. Round your answer to 2 decimal places when necessary.In a recent year, there were 45 accidents in commercial aviation among major airlines over 15.0 million flight hours. Find the accident rate in units of accidents per 100,000 flight hours.
A. 3 accidents per 100,000 flight hours B. 0.30 accidents per 100,000 flight hours C. 0.45 accidents per 100,000 flight hours D. 4.5 accidents per 100,000 flight hours
Find the value of the trigonometric function.cos (-776.81°)
A. 0.8925 B. 0.5474 C. 0.0557 D. -0.8369
Evaluate.98 - 12 ? 4 + 247 ÷ (-19)
A. 331 B. -18 C. -1136 D. 37
Use division properties of one and zero to quickly determine the quotient, or state that the expression is undefined.0 ÷ 34
A. 34 B. Undefined C. 0 D. 1