CUET Preparation Today
CUET
General Test
Quantitative Reasoning
Trigonometry
If cos (\(\frac{π}{2}\) - 2θ) = \(\frac{1}{2}\) , the value of tan3θ is?
2
-1
1
0
cos (\(\frac{π}{2}\) - 2θ) = \(\frac{1}{2}\)
⇒ cos(\(\frac{π}{2}\) - 2θ) = cos60°
⇒ 90 - 2θ = 60°
⇒ 2θ = 30° ⇒ θ = 15°
tan3θ = tan45° = 1
