Solve the equation.
= 
for 0° ? ? ? 90°
A. {20°}
B. {150°}
C. {90°}
D. {10°}
Answer: A
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Which of the following applications might not want to use negative and positive numbers to represent their mathematical needs? ?
A. ?A company wants to create a spread sheet of losses and profits for the month. B. ?A company wants to create a spread sheet showing debits and credits. C. ?A company want to show the variance for each expense in the company. D. ?The variance can never be negative. E. ?The variance can be either negative or positive.
Answer the question.f(x) = 
Is f continuous at f(1)?
A. Yes B. No
Determine whether the equation has no solution, one solution, or infinitely many solutions.10k - 69 = 5(2k - 15)
A. Infinitely many solutions B. No solutions C. One solution
Find the exact value of the expression.cos 
sin 
- cos 
sin 
A. 
B. 
C. 
D. 1