MCQ Practice

Mohan looks at a tree top and the angle made is 45°. He moves 10 cm back and again looks at the tree top but this time angle made is 30°. How high is the tree top from ground?

A

$$frac{{10}}{{sqrt 3 + 1}},{text{cm}}$$

B

$$20sqrt 3 ,{text{cm}}$$

C

$$20,{text{cm}}$$

D

$$frac{{10}}{{sqrt 3 - 1}},{text{cm}}$$

Correct Answer: D