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.

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.Use differentials to estimate the error in computing the length of the hypotenuse. (Round the answer to two decimal places.)What is the percentage error? (Round the answer to the nearest whole number.)