posted by deep .
One side of a right triangle is known to be 45 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. (Round the answer to two decimal places.)
dh sintheta+ h*costheta dtheta=0
dh= -h*ctnTheta dtheta
change dTheta to radians (2pi/180)
check my thinking