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The Area of a Triangle Is Given by the Formula θ\theta

Question 69

Multiple Choice

The area of a triangle is given by the formula A =  The area of a triangle is given by the formula A =   ab sin  \theta , where  \theta  is the angle between the sides having lengths a and b. If measurements indicate that a = 4 m with error ± 1 cm,b = 3 m with error ± 1 cm, and  \theta  = 60° with error ± 2°, use differentials to determine the approximate maximum error in the calculated area of the triangle. A)  about 0.135 m<sup>2</sup> B)  about 6.015 m<sup>2</sup> C)  about 0.603 m<sup>2</sup> D)  about 0.014 m<sup>2</sup> E)  about 0.862 m<sup>2</sup> ab sin θ\theta , where θ\theta is the angle between the sides having lengths a and b. If measurements indicate that a = 4 m with error ± 1 cm,b = 3 m with error ± 1 cm, and θ\theta = 60° with error ± 2°, use differentials to determine the approximate maximum error in the calculated area of the triangle.


A) about 0.135 m2
B) about 6.015 m2
C) about 0.603 m2
D) about 0.014 m2
E) about 0.862 m2

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