🛠️ JEE➗ Maths

Let \(\alpha =3+4+8+9+13+14+\ldots\) upto \(40\) terms. If \((\tan \beta {)}^{\frac{\alpha }{1020}}\) is a root of the e…

Q1

Let \(\alpha =3+4+8+9+13+14+\ldots\) upto \(40\) terms. If \((\tan \beta {)}^{\frac{\alpha }{1020}}\) is a root of the equation \({x}^{2}+x-2=0,\beta \in \left(0,\frac{\pi }{2}\right)\), then \({\sin }^{2}\beta +3{\cos }^{2}\beta\) is equal to:

[JEE Main 2026, 8 Apr (Shift 2)]

a

\(2\)

b

\(\frac{7}{4}\)

c

\(\frac{5}{2}\)

d

\(\frac{3}{2}\)

🔒
Answer & explanation — PYQ Pass

Options are free to see. Unlock the correct answer and full explanation with Pass.

Unlock · ₹149

Practice more JEE Maths PYQs

See every question on Sequence and Series, or browse the full JEE question bank.

See all questions on Sequence and Series →