JEE Main 10 Jan 2019 Shift 1 Solved Paper

Section: Mathematics

Question : 31 of 90

Marks: +1, -0

Consider a triangular plot ABC with sides AB = 7m, BC = 5m and CA = 6m. A vertical lamp-post at the mid point D of AC subtends an angle 30° at B. The height (in m) of the lamp-post is:

[10 Jan 2019 Shift 1]

7√3
2
3
√21
3
2
√21
2√21

Validate

Go to Question:

Prev Question

Next Question