Calculate 
Mathematics
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Find the exact value of the expression using the provided information.Find tan(s + t) given that cos s = 
, with s in quadrant I, and 
with t in 
A. 
B. 
C. 
D. 
Mathematics
Find the indicated matrix.Let A = 
, B = 
, and C = 
. Find AB + BC.
A. 
B. 
C. 
D. 
Mathematics
Find the slope of the line that goes through the given points.(-2, -3), (-2, 1)
A. 0
B. 
C. 1
D. Undefined
Mathematics
Write the vector v in the form ai + bj, given its magnitude 
and the angle ? it makes with the positive x-axis.
= 7, ? = 225°
A. v = 7
B. v = 7
C. v = 7
D. v = 7
Mathematics