Question

1. If a shadow of a tower is √3 times it's height,then find the angle of elevation of the Sun???


2. If the angle of elevation of the Sun is 45°, then find the length of the shadow of 12 m high tree???
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Answer 1

Answer:

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the velocity of the object from 5 m/s to 10 m/s.State Newton’s three laws of motion. List 5 Differences between Potential energy and Kinetic energy. What is the Universal Law of Gravitation? Obtain a Mathematical equation for it. Also,

give two points highlighting its importanceFind the value of the constant force that is applied for 1 second on a 10kg object to increase

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give two points highlighting its importanceFind the value of the constant force that is applied for 1 second on a 10kg object to increase

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the 5 kingdoms into which all living organisms are classified.ive any 5 postulates of Dalton’s atomic theoryive any 5 postulates of Dalton’s atomic theory (i) What are the 7 chief classification groups used to classify living organisms? (ii) Name

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Answer 2

Answer:

1)30°

2)12m

Step-by-step explanation:

1)let the towers height be x

then it is given that its shadow is

$\sqrt{3} x$

let the angle of elevation be a,then

$\tan(a ) = \frac{x}{ \sqrt{3}x } = \frac{1}{ \sqrt{3} }$

$\tan(a) = \frac{1}{ \sqrt{3} } = \tan(30)$

so a=30°

2) Let the length of shadow be x

then

$\frac{12}{x} = \tan(45 ) = 1$

x=12m

so the length of the shadow is 12m