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CBSE Class 10 Answered

If two crows are sitting at a height of 15 m and 10 m on different trees vertically opposite to each other. They view a vaddi (an estable) on the ground at a angle of depression 45°and 60° respectively. They start at the same time and fly at the same speed along the shortest path to pick up the vadai.Which bird will succeed in it.?

Asked by urzashu7818 | 15 Jan, 2021, 12:52: PM
Expert Answer
tan 45 equals fraction numerator P A over denominator A B end fraction
A B equals 15
tan 60 equals fraction numerator Q C over denominator B C end fraction
square root of 3 equals fraction numerator 10 over denominator B C end fraction
B C equals fraction numerator 10 over denominator square root of 3 end fraction
P B equals square root of 15 squared plus 15 squared end root
equals 15 square root of 2
Q B equals square root of 10 squared plus open parentheses fraction numerator 10 over denominator square root of 3 end fraction close parentheses squared end root
Q B equals fraction numerator 20 over denominator square root of 3 end fraction
H e r e fraction numerator 20 over denominator square root of 3 end fraction less than 15 square root of 2
H e n c c e space t h e space b i r d space s i t t i n g space a t space 10 space m space t o w e r space w i l l space s u c c e e d
Answered by Utkarsh Lokhande | 15 Jan, 2021, 03:58: PM
CBSE 10 - Maths
Asked by arindeep.singh | 02 Oct, 2020, 12:19: PM
ANSWERED BY EXPERT
CBSE 10 - Maths
Asked by arindeep.singh | 02 Oct, 2020, 12:19: PM
ANSWERED BY EXPERT

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