Solve the given trigonometric equation analytically (using identities when necessary for exact values when possible) for values of x for 0 ? x < 2?.sec 
= cos 
A. 0
B. 0, 
, ?, 
C. 
, 
, 
, 
, 
, 
, 
D. 
, 
Answer: A
Mathematics
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Write the first four terms of the sequence and the indicated term.an = 
, 19th term
A. 0, 
, 
, 
, 
B. 
, 
, 
, 
, 
C. 
, 
, 
, 
, 
D. 
, 
, 
, 
, 
Mathematics
Multiply.-13(13)
A. -182 B. -169 C. 182 D. 169
Mathematics
Find the conjugate of the complex number. Then multiply the complex number by its conjugate.4 - 6i
A. 4 - 6i; 52 B. -2; 52 C. 4 + 6i; 52 D. 10; 52
Mathematics
Write the expression in the standard form a + bi.If z = 6 + 6i and w = -3 + i, evaluate 
.
A. 3 + 7i B. 9 - 5i C. 9 + 5i D. -9 - 5i
Mathematics