If r sinθ = \(\sqrt { 3}\) and r cosθ = 1, the value of r and θ are?
Answer & explanation
Correct answer: option 2
r sinθ = \(\sqrt {3 }\)
r cosθ = 1
squaring and adding
⇒ r2 (sin2θ + cos2θ) = 4
⇒ r2 = 4 (because sin2θ + cos2θ = 1)
\(\frac{r\;sinθ}{r\;cosθ}\) = \(\sqrt { 3}\) ⇒ tanθ = \(\sqrt {3 }\)
⇒ θ = 60°, r = 2