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Examveda

If rsinθ = 1, rcosθ = $$\sqrt 3 {\text{,}}$$  then the value of r2tanθ is?

A. 4

B. $$\frac{1}{{\sqrt 3 }}$$

C. $$\frac{4}{{\sqrt 3 }}$$

D. $${\text{4}}\sqrt 3 $$

Answer: Option C

Solution(By Examveda Team)

$$\eqalign{ & r\sin \theta = 1,{\text{ }}r\cos \theta = \sqrt 3 \cr & {\text{Put }}\theta = {30^ \circ } \cr & r = 2 \cr & {\text{So}},{\text{ }}{r^2}\tan \theta \cr & = {\left( 2 \right)^2} \times {\text{tan}}{30^ \circ } \cr & = 4 \times \frac{1}{{\sqrt 3 }} \cr & = \frac{4}{{\sqrt 3 }} \cr} $$

This Question Belongs to Arithmetic Ability >> Trigonometry

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