Insert <, >, or = between the given expressions to obtain a true statement.tan 57° tan 155°
A. <
B. =
C. >
Answer: C
Mathematics
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Find the length of the curve.x = t3, y = 2t2, 0 ? t ? 1
A. 
B. 
C. 
D. 
Mathematics
Solve the problem.Find the equation for the tangent plane to the surface 
at the point 
A. z = 2 B. z = 1 C. z = -1 D. z = 0
Mathematics
Solve the problem.A plane starts its descent from a cruising altitude of 32,000 feet. It descends at a rate of 2500 feet per minute. Draw a graph in which the plane's altitude is measured on the vertical axis and use the graph to estimate how long it will take for the plane to reach an altitude of 4000 feet. 
A. About 7 minutes B. About 18 minutes C. About 11 minutes D. About 7 minutes
Mathematics
Use identities to simplify the expression.sin2 ? + tan2 ? + cos2 ?
A. sin ? B. cos3 ? C. sec2 ? D. tan2 ?
Mathematics