A man on a top of a tower observes a truck at an angle of depression alfa where tan alfa - Maths - Some Applications of Trigonometry

Question

A man on a top of a tower observes a truck at an angle of
depression alfa where tan alfa =1 by root 5 and sees that its
moving towards the base of the tower ten minutes later the angle of
depression of the truck is found to be beta where tan beta=root5 if
the truck is moving at a uniform speed determine how much more time
it will take to reach the base of the tower?

Pooja · Accepted Answer

Here is the link for the answer to your query:

https://www meritnation
com/ask-answer/question/1-a-vertical-post-stands-on-a-horizontal-plane-the-angle-o/some-applications-of-trigonometry/1844852
Please see first solution of above given link