Use a Pythagorean identity to find the exact value of the expression.Given csc t = -7 and tan t > 0, find cot t.
A. cot t = 4
B. cot t = 8
C. cot t = 5
D. cot t = 6
Answer: A
Mathematics
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Use the properties of logarithms to rewrite the logarithm if possible. Assume that all variables represent positive real numbers.log5 
A. (6 log5 x)(7 log5 y) - log5 8 B. 6 log5 x + 7 log5 y - log5 8 C. 6 log5 x + 7 log5 y + log5 8 D. 6 log5 x - 7 log5 y - log5 8
Mathematics
Solve the system.x - y + z = 0x + y + z = 8x + y - z = 6
A. (1, 3, 4) B. (3, 1, 4) C. (3, 4, 1) D. No solution
Mathematics
Find the indicated derivative.Find fz for f(x, y, z) = 
.
A. 
B. 
C. 
D. 
Mathematics
Rationalize the denominator. 
A. 
B. 
C. 
D. 
Mathematics