the angle of elevation theta off the top of a Lighthouse as seen by a person on the ground is such that tan theta is equal to 5/12 when the person moves a distance of 240 M towards the Lighthouse the angle of elevation becomes becomes Alpha such that tan Alpha equal to 3/4. find the height of the Lighthouse
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Height = 225M is the answer
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Abhay447:
samajh nhi aaya
sahi se batao
statement mai likhaa hai ki tan alpha ki value 5/12 hai , to maine mana heihht H hogi or Base B
iseliye vo equation first ayii
then uske baad usne kaha ki apne point se vo 240 m age a gaya , ab lakin naya tan theta ki value means , Jo base pehla thaa vo to 240 m kam ho gaya naa , iseliye tan theta = H/ B-240 likhaa
ab simple 2 equation hai , or 2 variable , upar equation 1 se B is value nikal k equation 2 mai put kr di
I hope you understand now
ty sir.......
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