Find the limit.
tan-1 x
A. - 
B. ?
C. 
D. 0
Answer: C
Mathematics
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Find the weighted mean. Round to the nearest tenth.
A. 7.2 B. 23.6 C. 26.0 D. 22.3
Mathematics
Convert the angle to D° M' S'' form. Round the answer to the nearest second.265.43°
A. 265°25'43'' B. 265°25'48'' C. 265°47'43'' D. 265°26'47''
Mathematics
Decide whether the given inequality is true or false.-1 > -1
A. True B. False
Mathematics
Find zw or 
as specified. Leave your answer in polar form.z = 10(cos 45° + i sin 45°)w = 5(cos 15° + i sin 15°)Find 
.
A. 
(cos 45° + i sin 45°)
B. 2(cos 30° + i sin 30°)
C. 
(cos 30° + i sin 30°)
D. 2(cos 45° + i sin 45°)
Mathematics