Evaluate the indicated trigonometric function of the acute angle ?.If ? is an acute angle of a right triangle and if tan ? = 
, then find the value of cos ?.
A. 
B. 
C. 2
D. 
Answer: B
Mathematics
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Find the magnitude of u × v and the unit vector parallel to u × v in the direction of u × v.u = 2i, v = 2j
A. 4; k B. 4; 4k C. 4; -k D. 2; 2k
Mathematics
Calculate the maximum error of the value indicated.cos 0.285 using two terms of the appropriate series expansion.
A. 7.8 × 10-5 B. 1.6 × 10-5 C. 2.7 × 10-4 D. 5.5 × 10-5
Mathematics
Simplify the complex fraction.
A. 
B. 
C. 
D. 
Mathematics
On the coordinate plane below, plot the points with the given coordinates.A(-3, 0), B (0, 2)
A. 
B. 
C. 
D. 
Mathematics