Determine the values of the given functions as indicated rounded to four decimal places. Find cos 105° by using 105° = 60° + 45°.
A. -0.2588
B. -0.7071
C. 0.2500
D. -0.9659
Answer: A
Mathematics
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Write the complex number in rectangular form.9(cos 180° + i sin 180°)
A. -9 B. 9i C. -9i D. 9
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Solve the rational equation.
= 
+ 
A. 
B. - 
C. 3
D. -3
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Convert.0.9 meters = ___ kilometers
A. 0.009 B. 0.0009 C. 900 D. 90
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Simplify the expression 
a. 3 b. 0 c. -9 d. -81
Mathematics