If cos (a + b) = 3 5 , sin(a – b) = 5 13 and 0 < a, b < 4 p , then tan(2a) is equal to :

Question:
If $\cos (\alpha+\beta)=\frac{3}{5}, \sin (\alpha-\beta)=\frac{5}{13}$ and $0<\alpha, \beta<\frac{\pi}{4}$, then $\tan (2 \alpha)$ is equal to :

$\frac{63}{52}$
$\frac{63}{16}$
$\frac{21}{16}$
$\frac{33}{52}$

Correct Option: 2

JEE Main Previous Year 1 Question of JEE Main from Mathematics Trigonometry chapter.

JEE Main Previous Year April 8, 2019 (I)

Solution:

Leave a Reply Cancel reply