Evaluate.cos2 315° - sin2 270° + 4 tan2 30°
A. - 
B. 
C. 
D. 
Answer: B
Mathematics
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Solve the problem.Find the points where a tangent to the curve of y = cot x is parallel to the line y = - 
x if 
.
A. x = 
, 
B. x = 
, 
, 
, 
C. x = 
, 
, 
, 
D. x = 
, 
, 
, 
Mathematics
Convert between English and Metric System of Units.
12 ft 6 in. = 
m (Round to the nearest tenth.)
A. 4.2 B. 3.6 C. 3.2 D. 3.8
Mathematics
Provide an appropriate response.Write 0.035 as a fraction with a power-of-ten denominator
A. 
B. 
C. 
D. 
Mathematics
Write as a decimal number rounded as indicated.2.3
; Round to the nearest hundredth.
A. 2.32 B. 2.33 C. 2.34 D. 2.31
Mathematics