When the sun's angle of depression changes from 30o

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M: +1.00/-0.25

When the sun's angle of depression changes from 30^o to 60⁰ . the length of the shadow of a tower decreases by 70 m. What is the height of the tower?

[SSC CPO 16th-March-2019-Shift-3]

A 45.65 m

B 60.55 m

C 65.55 m

D 36.55 m