Find the value of given trigonometric function. Round your answer to four decimal places.
?
?
A. 
0.3142
B. 
0.6142
C. 
- 0.4142
D. 
0.4142
E. 
0.5142
Answer: D
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Solve the problem.Find the equation of the tangent line to the curve 
- 
= 1, at the point 
A. -
x + 81
y = 81
B. 
x - 81y = 74
C. 
x + 9y = 74
D. -
x + 81y = 74
Let a and b be positive numbers. Determine whether the statement is true or false.(-a)(-a)(-a) is a positive number.
A. True B. False
Forces F1 and F2 act at the same point. Find the resultant force F and its magnitude.F1 = 0.1i + 0.4j, F2 = -1.3i - 9.2j
A. F = 0.5i - 10.5j ; 
= 10.511898
B. F = -1.2i - 8.8j ; 
= 8.88144132
C. F = -1.2i + 9.6j ; 
= 9.6747093
D. F = -1.2i - 9.6j ; 
= 9.6747093
Solve.While traveling in a car, the centrifugal force a passenger experiences as the car drives in a circle varies jointly as the mass of the passenger and the square of the speed of the car. If the a passenger experiences a force of 162 newtons when the car is moving at a speed of 60 kilometers per hour and the passenger has a mass of 50 kilograms, find the force a passenger experiences when the car is moving at 40 kilometers per hour and the passenger has a mass of 40 kilograms.
A. 80 newtons B. 57.6 newtons C. 64 newtons D. 51.2 newtons