Two men on either side of a temple 75m High have angles of elevation as 45° each. the distance between them is
Answers
Answer:
Two persons are on either side of a temple, 75 m high, observe the angle of elevation of the top of the temple to be 30° and 60° respectively. The distance between the persons is
173.2 m
100 m
157.7 m
273.2 m
A.
173.2 m
Clearly, from the figure, the distance is BD = (BC + CD) m
In Δ ABC,
tan space 30 degree space space equals space AC over BC
fraction numerator 1 over denominator square root of 3 end fraction space equals space 75 over BC
BC space equals space 75 square root of 3 space straight m
In Δ ACD,
tan space 60 degree space equals space AC over BC
space space square root of 3 space equals space 75 over CD
CD space equals space fraction numerator 75 over denominator square root of 3 end fraction space cross times space fraction numerator square root of 3 over denominator square root of 3 end fraction space equals space fraction numerator 75 square root of 3 over denominator 3 end fraction
CD space equals space 25 square root of 3 space straight m
∴ Distance between both persons = BD = BC + CD
equals space 75 square root of 3 space plus space 25 square root of 3 space equals space 100 square root of 3
equals space 100 space cross times space 1.732 space equals space 173.2 space straight m
Step-by-step explanation:
Distances between two men is
175.3m