The angle C of DeltaABC is found by mea...

The angle C of `DeltaABC` is found by measurement to be `47^(@)` and the area is calculated by the formula `(1)/(2)ab sin` C. The percentage error in the calculated area due to an error `10^(1)` in the measured value of C is

A

`(5pi)/(54)cot47^(@)`

B

`(pibc)/(1440)cos63^(@)`

C

`(5pi)/(36)cot63^(@)`

D

`(pibc)/(1120)cos42^(@)`

Text Solution

Verified by Experts

The correct Answer is:

A

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