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Solution


Q.

The government plans to build ramp-like walls as boundary protection around a sensitive area. These walls are being constructed to reinforce the region’s boundary. The government has specified that the walls should have a height of 6 m above ground level with an inclination of approximately 30°.

Based on the given information, answer the questions given below:

 

(i) Find the distance of DF.
1 12 m   
2 11 m  
3 13 m  
4 14 m  

Ans.

(1)

In △DEF, we havesin30°=EDDF⇒12=6DF∵ED=6 m⇒DF=12 m