Find sin ?, cos ?, tan ?, csc ?, sec ?, and cot ? for an acute angle ? in a right triangle. It is not necessary to find the measure of ?.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 ? = 
Answer: D
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but was confused about whether or not he or she should set 
, or 3 = 0 and 
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What will be an ideal response?
Divide.(4x3 + 16x2 + 16x) ÷ (x2 + 2x)
A. 4x2 + 8x B. x + 8 C. 4x + 8 D. 4x
Simplify.
(3)
A. 
B. - 
C. - 
D. 
You are trying to determine the half-life of a new radioactive element you have isolated. You start with 2 grams, and 4 days later you determine that it has decayed down to 0.1 gram. What is the half-life? Round your answer to three decimal places. ? Select the answer rounded to three decimal places. ?
A. 1.388 days B. 1.851 days C. 2.777 days D. 0.463 days E. 0.926 days