The area of a triangle is given by the formula A = ab sin , where ...

[acc299]

Question 1

Find the differential of the function f(x, y) = ln cos(xy).
◦ cot(xy)(y dx  +  x dy)
◦ -tan(xy)(y dx  +  x dy)
◦ tan(xy)(y dx  +  x dy)
◦ -tan(xy)(x dx  +  y dy)
◦ -cot(xy)(y dx  +  x dy)

Question 2

The area of a triangle is given by the formula A = ab sin θ, where θ 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 = 60°  with error  ± 2°, use differentials to determine the approximate maximum error in the calculated area of the triangle.
◦ about  0.014 m²
◦ about  0.135 m²
◦ about  0.603 m²
◦ about  6.015 m²
◦ about  0.862 m²

[billybob123]

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[acc299]

YES! Correct, THANKS for helping me on my review

[bbburns21]

Thanks for the timely response, appreciate it