Identify the equation as either an identity or not.cos 2? = sin 2? tan ?
A. Not an identity
B. Identity
Answer: A
Mathematics
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Evaluate, if possible-
A. Not a real number B. 0.11 C. -0.11 D. -0.011
Mathematics
Solve the problem.An arch for a bridge over a highway is in the form of a semiellipse. The top of the arch is 35 meters above ground. The main span is 69.71 meters wide. Write an equation for the ellipse in which the x-axis coincides with the ground and the y-axis passes through the center of the arch.
A. 
+ 
= 1
B. 
+ 
= 1
C. 
+ 
= 1
D. 
+ 
= 1
Mathematics
Find the sum of the series.
A. 80 B. 16 C. -80 D. 4096
Mathematics
Determine if the given number is a solution to the equation.Is y = 4 a solution to the equation 16 - y = 12?
A. Yes B. No
Mathematics