Measurement of one side of the right angle triangle is
.
Angle opposite to that side is
.

Thus,
and
.
\
Consider the length of the hypotenuse as
.

.
Consider
.
Differentiate the above equation with respect to
.

(a) Approximate the percentage error in computing the length of the hypotenuse:
\

Percentage error in computing the length of the hypotenuse
.
(b)
\Estimate the maximum allowable percent error in measuring the angle if the error in computing the length of the hypotenuse cannot exceed
.

Find
.
The maximum allowable percent error in measuring the side is
.
(a) Percentage error in computing the length of the hypotenuse
.
(b) The maximum allowable percent error in measuring the side is
.