Use a calculator to give the value in degrees.cos-1(-0.3907)

A. 115°
B. 110°
C. 113°
D. -67°

Answer: C

Mathematics

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In a right triangle, find the length of the side not given. Where appropriate, give an approximation to three decimal places.b = 3, c = 

A. a = 5.745 B. a = 23.812 C. a = 3.873 D. a = 4.873

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Mathematics

Evaluate the integral.

A. 7 tan x +  tan3 x + C
B. 7(sec x + tan x)5+ C
C. -  tan3 x + C
D.  tan3 x + C

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Mathematics

Identify the digit with the given place value.0.241215tenths

A. 5 B. 0.2 C. 2 D. 0

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Mathematics

Find the nonreal complex solutions of the equation.x2 + 4x + 29 = 0

A. {2 + 5i, 2 - 5i}
B. {-2 + i, -2 - i}
C. {-2 + 5i, -2 - 5i}
D. {3, -7}

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Mathematics