Multiply using a special product formula.
A. 121x2 - 
x - 
B. 121x2 - 
C. 121x2 - 
x + 
D. 121x2 - 
Answer: D
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Find the measure of each unknown angle in triangle ABC.
?A = (40x - 15)°, ?B = (27 - 2x)°, ?C = (12 + x)°
A. ?A = 35°, ?B = 15°, ?C = 20° B. ?A = 35°, ?B = 27°, ?C = 8° C. ?A = 145°, ?B = 19°, ?C = 16° D. ?A = 145°, ?B = 23°, ?C = 12°
Find the value of a so that the trigonometric function passes through the given point.y = a cos x(?, 5)
A. ? B. 5 C. 1 D. -5
Solve.The distance that an object falls when it is dropped is directly proportional to the square of the amount of time since it was dropped. An object falls 288 feet in 3 seconds. Find the distance the object falls in 5 seconds.
A. 480 feet B. 160 feet C. 800 feet D. 15 feet
Evaluate the cylindrical coordinate integral.
A. 
B. 
C. 
D. 