A projectile is launched at an angle ' $\alpha$ ' with the horizontal with a velocity $20 \; ms ^{-1}$. After $10 s$, its inclination with horizontal is ' $\beta$ '. The value of $\tan \beta$ will be : $\left( g =10 \; ms ^{-2}\right)$
A projectile is launched at an angle ' $\alpha$ ' with the horizontal with a velocity $20 \; ms ^{-1}$. After $10 s$, its inclination with horizontal is ' $\beta$ '. The value of $\tan \beta$ will be : $\left( g =10 \; ms ^{-2}\right)$
- [JEE MAIN 2022]
- A
$\tan \alpha+5 \sec \alpha$
- B
$\tan \alpha-5 \sec \alpha$
- C
$2 \tan \alpha-5 \sec \alpha$
- D
$2 \tan \alpha+5 \sec \alpha$
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