Request a call back

Join NOW to get access to exclusive study material for best results

CBSE Class 11-science Answered

Trignometry
Asked by | 04 Apr, 2008, 02:15: PM
answered-by-expert Expert Answer

let height of lamp post = h

and its distance from center of the road = x

here lamp focus covers a total area within 30o so the horizontal distance which is covered by light of lamp should be 10m

so at 10m distance the angle made by lamp on the boundary point will be 90-30 = 60

so we have tan 45 = h/x

and tan 60 = h/10    => h= 10 tan60 = 103

so l=h=103

Answered by | 08 Sep, 2008, 07:10: PM

Application Videos

CBSE 11-science - Maths
Asked by rishithatelaprolu84 | 29 Mar, 2024, 08:32: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 11-science - Maths
Asked by Manjeet | 23 Mar, 2024, 09:41: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 11-science - Maths
Asked by rambabum3372 | 21 Mar, 2024, 04:51: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 11-science - Maths
Asked by ambedkarrajesh5 | 18 Mar, 2024, 08:39: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 11-science - Maths
Asked by sukumeyoji | 15 Mar, 2024, 04:32: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 11-science - Maths
Asked by kanishkatutejasirsa | 09 Mar, 2024, 11:08: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 11-science - Maths
Asked by rajyothi64 | 05 Mar, 2024, 09:49: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 11-science - Maths
Asked by ghoshshawata62 | 04 Mar, 2024, 08:16: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 11-science - Maths
Asked by ns091764623 | 03 Mar, 2024, 08:33: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
Get Latest Study Material for Academic year 24-25 Click here
×