Saved Bookmarks
| 1. |
If y= tantheta , the value of theta=60 and error in measurement of angle is 1.8°. Find the value of y. (a) 0.126 (b) 1.25 (c) 0.014 (d) 0.0126 |
| Answer» EXPLANATION:∵m=ktanθ∴dm=ksec 2 θdθ⇒ mdm = ktanθksec 2 θ dθ⇒ mdm = sinθcosθdθ = sin2θ2dθ ⇒% error is minimum when sin2θ has MAXIMUM VALUE HENCE 2θ= 2π orθ=45 ∘ | |