Simplify the expression.
A. undefined
B. tan(4x + ?)
C. 0
D. tan(4x - ?)
Answer: C
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Solve the problem.Use the fact that tan x = x + 
+ 
+ 
+ . . . for |x| < 
to find the first four terms of the series for ln (cos x).
A. 1 + x2 + 
+ 
+ . . .
B. 
+ 
+ 
+ 
+ . . .
C. - 
D. - 
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. 
, 
Use the Pythagorean Theorem to find the length of the missing side.Then find the indicated trigonometric function of the given angle. Give an exact answer with a rational denominator.Find sin ?.
A. 
B. 
C. 
D. 
Rewrite the number or expression as requested.(16 ? 109) ÷ (4 ? 104) (Write the result in scientific notation.)
A. 8 ? 105 B. 4 ? 105 C. 8 ? 1013 D. 4 ? 1013