State which trigonometric functions are undefined for the given value. Refer to the unit circle below.
A. Cosecant and tangent
B. Secant and cotangent
C. Cosecant and cotangent
D. Secant and tangent
Answer: D
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Write the function in terms of its cofunction. Assume that any angle in which an unknown appears is an acute angle.cos 31.2°
A. sin 58.8° B. cos 148.8° C. sec 148.8° D. sin 31.2°
Solve using a matrix on a graphing calculator.
A. (1, 3, 2) B. (1, 2, 3) C. (-1, 2, 2) D. No solution
Translate the sentence to an equation using x as the variable. Do not solve the equation.The product of negative four and a number is forty-eight.
A. -12x = 4 B. x ÷ (-4) = 48 C. -4x = 48 D. -4 + x = 48
Fill in the blank with one of the words or phrases listed below.
If both sides of an inequality are multiplied or divided by the same positive number, the direction of the inequality symbol is 
.
A. reversed B. no solution C. the same D. all real numbers