Use the given information to find the exact value of the trigonometric function.sec ? = 4, ? lies in quadrant I
Find cos 
.
A. 
B. 
C. 
D. 
Answer: A
You might also like to view...
Evaluate the integral by using a substitution prior to integration by parts.
A. xln (6x + 6x2) + C B. xln (6x + 6x2) + ln (x +1) - 2x + C C. ln (6x + 6x2) + ln (x +1) + C D. ln (6x + 6x2) - 2x + C
Use the problem-solving strategy to solve the problem and find the unknown number.4 times the difference between a number and 8 yields the difference between 5 times the number and 12.
A. -4 B. -20 C. 4 D. 20
Evaluate the expression according to the order of operations.16 - 
A. 18 B. 2 C. 14 D. 12
Use the frequency distribution to find the mean and the sample standard deviation. Does the data form a normal distribution? Remember: if the data fall within 2% of the empirical rule of 68%, 95%, and 99.7% for one, two, or three standard deviations, respectively, they form a normal distribution. Life of bulb (hours) Frequencyf0 - 999.5 103999.5 - 1,999.5 4761,999.5 - 2,999.5 2,0622,999.5 - 3,999.5 4,1293,999.5 - 4,999.5 2,4604,999.5 - 5,999.5 4215,999.5 - 6,999.5 146
A. The mean is 3,546 hours. The sample standard deviation is 1,018 hours. The data forms a normal distribution. B. The mean is 3,523 hours. The sample standard deviation is 1,017 hours. The data forms a normal distribution. C. The mean is 3,546 hours. The sample standard deviation is 1,018 hours. The data doesn't form a normal distribution. D. The mean is 3,542 hours. The sample standard deviation is 1,027 hours. The data forms a normal distribution. E. The mean is 3,523 hours. The sample standard deviation is 1,017 hours. The data doesn't form a normal distribution.