Find the exact value in degrees.csc-1 (2)

A. 60°
B. 30°
C. -30°
D. 420°

Answer: B

Mathematics

Write the function in terms of its cofunction. Assume that any angle in which an unknown appears is an acute angle.cos 46.7°

A. cos 133.3° B. sin 43.3° C. sec 133.3° D. sin 46.7°

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Mathematics

Expand.(x - )5

A. x⁵ - 5x⁴ + 70x³ - 70x² + 245x - 49
B. x⁵ - 5x⁴ + 7x³ - 70x² + 245x - 49
C. x⁵ - 5x⁴ + 70x³ - 70x² + 49x - 49
D. x⁵ - 5x⁴ + 70x³ - 70x² + 245x - 49

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Mathematics

Factor.121 - 144x2

A. (11x - 12)(11x + 12) B. (11 - 12x)2 C. (11 - 12x)(11 + 12x) D. Not possible

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Mathematics

Solve the problem. When appropriate, round the solution to the nearest tenth. As needed, use the formula Find the pH if [H3O+] is8.7 × 10-5.

A. 4.1 B. 4.5 C. -5.9 D. 5.9

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Mathematics