Find the exact value under the given conditions.Given sin ? = 
, with ? in quadrant I, and cos ? = 
, with ? in quadrant I. Find cos (? + ?).
A. 
B. - 
C. - 
D. 
Answer: C
Mathematics
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Evaluate the integral.
A. 3? B. 5? C. 4? D. 2?
Mathematics
Decompose v into two vectors v1 and v2, where v1 is parallel to w and v2 is orthogonal to w.v = i + 5j,
w = i + j
A. v1 = 3i + 3j), v2 = -2i + 2j
B. v1 = 3i + 3j, v2 = 2i - 2j
C. v1 = 6i + 6j, v2 = -4i + 4j
D. v1 = 
i + 
j, v2 = - 
i + 
j
Mathematics
Simplify the expression.
2
A. 3
B. 
C. 
D. 1
Mathematics
Solve.
A. (-5, -5), (-3, 3) B. (5, 35), (3, 27) C. (5, 3) D. (-5, 35), (-3, 27)
Mathematics