Use the Half-angle Formulas to find the exact value of the trigonometric function. cos 75°
A. - 
B. 
C. 
D. - 
Answer: B
Mathematics
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Write the rational expression in simplest form.
?
?
?
A. ?
B. ?
C. ?
D. ?
E. ?
Mathematics
Use properties of logarithms to evaluate the expression.100log103
A. log109
B. 
C. 6
D. 9
Mathematics
Solve the problem.There are currently 57 million cars in a certain country, increasing exponentially by 0.8% annually. How many years will it take for this country to have 64 million cars? Round to the nearest year.
A. 243 yr B. 14 yr C. 5 yr D. 9 yr
Mathematics
Provide an appropriate response.A club has n (n ? 3) members. They want to choose 3 people from among these n members to form a committee. Prove by induction that the number of possible ways of choosing the 3 people is 
.
What will be an ideal response?
Mathematics