Question: One side of a right triangle is known to be 20 cm long and the opposite angle is measured as 30, with a possible error

One side of a right triangle is known to be 20 cm long and the opposite angle is measured as 30°, with a possible error of ±1°.
(a) Use differentials to estimate the error in computing the length of the hypotenuse.
(b) What is the percentage error?

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