Use the given information to find the exact value of the trigonometric function.csc ? = - 
; tan ? > 0
Find cos 
.
A. 
B. - 
C. - 
D. 
Answer: B
Mathematics
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Solve the problem.The monthly incomes of trainees at a local factory are normally distributed with a mean of $1600 and a standard deviation $150. What percentage of trainees earn less than $1390 a month?
A. 1.40% B. 44.04% C. 91.92% D. 8.08%
Mathematics
Solve the problem.Find the area bounded by y = 
, x = 0, y = 0, and x = 3.
A. 
sin-1
B. 
tan-1
C. sin-1
D. 
tan-1
Mathematics
Verify the identity.1 + sec2x sin2x = sec2x
What will be an ideal response?
Mathematics
Use a half-angle formula to find the exact value of the expression.cos 
A. - 
B. - 
C. 
D. 
Mathematics