Use the properties of the trigonometric functions to find the exact value of the expression. Do not use a calculator.cos 65° sec 65°
A. -1
B. 0
C. 1
D. 65
Answer: C
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Solve. Round to the nearest whole if necessary.24% of the lawyers in a firm are female. If there are 800 lawyers altogether, how many lawyers are female?
A. 192 lawyers B. 3333 lawyers C. 3 lawyers D. 608 lawyers
Factor the difference of two squares. Assume that variables represent whole numbers.a2b2 - 4c2
A. (b + 2c)(b - 2c) B. (a2b + 2c)(ab - 2c) C. (ab + 2c)(ab - 2c) D. (abc + 2)(ab - 2)
Solve the problem.A tank contains 3
gallons of water. Its capacity is 4
gallons. How much more water is needed to fill it?
A. 
gallon(s)
B. 1
gallon(s)
C. 
gallon(s)
D. 2
gallon(s)
Use the basic trigonometric identities and the given information to find the exact values of the remaining trigonometric functions.sin ? = 
and cos ? = - 
A. sin ? = 
cos ? = - 
tan ? = - 
csc ? = - 
sec ? = 
cot ? = - 
B. sin ? = 
cos ? = - 
tan ? = - 
csc ? = - 
sec ? = 
cot ? = - 
C. sin ? = 
cos ? = - 
tan ? = - 
csc ? = 
sec ? = - 
cot ? = - 
D. sin ? = 
cos ? = - 
tan ? = - 
csc ? = 
sec ? = - 
cot ? = - 