Use an identity to write the expression as a single trigonometric function or as a single number.sin 22.5° cos 22.5°

A.
B.
C.
D.

Answer: C

Mathematics

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Graph the integrand and use geometry to evaluate the integral.

A. 49
B. 7?
C. 49?
D. ?

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Mathematics

At the given point, find the line that is normal to the curve at the given point.6x2y - ? cos y = 7?, normal at (1, ?)

A. y = -2?x + 3?
B. y = x -  + ?
C. y = - x +  + ?
D. y = x -  + ?

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Mathematics

Find the inverse of the relation.{(8, 5), (-8, -5), (2, -3), (-2, 3)}

A. {(5, 8), (-5, -8), (-3, -8), (3, -2)} B. {(5, 8), (-5, -8), (-3, 2), (3, -2)} C. {(5, 8), (8, -8), (-3, 2), (3, -2)}

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Mathematics

Convert the measurement as indicated. Round to the nearest tenth, if necessary.48.8 qt to liters

A. 92.7 L B. 46.4 L C. 12.7 L D. 51.7 L

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Mathematics