Use the unit circle to determine the value of the given expression or state that it is undefined.sec (-90°)
A. 0
B. -1
C. undefined
D. 1
Answer: C
Mathematics
You might also like to view...
Use a combination of rules for exponents to simplify. Write answers with only positive exponents. Assume that all variables represent nonzero real numbers.
A. 
B. 
C. 
D. 
Mathematics
Solve the problem.A store is discounting all regularly priced items by 30%. (i) Find a function f that computes the sale price of an item having a regular price of x. (ii) Find the regular price of an item that costs $78.46 on sale.
A. f(x) = 0.3 + x; $78.16 B. f(x) = 0.3x; $261.53 C. f(x) = x - 0.3x; $112.09 D. f(x) = x - 0.3; $78.76
Mathematics
Provide an appropriate response.Is it true that 4 × 1019 is written in scientific notation?
A. True B. False
Mathematics
Match the given equation with one of the graphs.
- 
= 1
A. 
B. 
C. 
D. 
Mathematics