In motion on an inclined experiment, a student measures the angle of inclined plane with a protractor whose uncertainty is Δθ=1 The acceleration of the motion due to gravity g along the inclined plane, which is has uncertainty due to the uncertainty of measuring the angle. Which one of the following is true about the uncertainty of acceleration Δa? a. Δa= gSinθ x Δθ
b. Δa= gCosθ x Δθ
c. Δa= gTanθ x Δθ
d. Δa= gSinθ