Simplify the expression.tan 
[tan x + cot x]
A. csc2x
B. sin2x
C. tan2x
D. sin x - csc x
Answer: A
Mathematics
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Find the requested partial derivative.
if 
and 
.
A. 3(x2 + y2 + z2) B. 18(x2 + y2 + z2) C. 18x2 D. 3x2
Mathematics
Convert the units.760 mL = 
L
A. 76,000 L B. 7.6 L C. 0.76 L D. 760,000 L
Mathematics
Add or subtract as indicated. Write the answer in simplest form.
+ 
A. 
B. 
C. 
D. 
Mathematics
Solve the triangle. Find the angles ? and ? first.a = 8, b = 8, c = 7
A. ? = 65.1°, ? = 65.1°, ? = 49.8° B. ? = 64.1°, ? = 51.8°, ? = 64.1° C. ? = 64.1°, ? = 64.1°, ? = 51.8° D. ? = 51.8°, ? = 64.1°, ? = 64.1°
Mathematics