Rationalize the denominator. 
A. 
B. 
C. 
D. 
Answer: A
Mathematics
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Prove that the equation is an identity.cos4x = 
What will be an ideal response?
Mathematics
Write the complex number in the form a + bi.6(cos 330° + i sin 330°)
A. -3
- 3i
B. -3
+ 3i
C. 3
- 3i
D. 3
+ 3i
Mathematics
Determine whether the given value is a solution of the equation.
= -3; 12
A. A solution B. Not a solution
Mathematics
An equation of the terminal side of an angle ? in standard position is given along with a restriction on x. Find the indicated trigonometric function value of ?. Do not use a calculator.2x + 7y = 0, x ? 0; Find cot ?.
A. 
B. - 
C. - 
D. 
Mathematics