Hii aspirants

let me clear your doubt.

There are vairous sites available online from where you can get previous year question paper of class 11 and 12 along with their answers also there are sites from which you can download ncert solutions. There are vairous apps also available for preparationof

Hello Danvarsha,

I hope you are doing good.

Preparing for JEE Mains, algebra and trigonometry are very important as they have a high weight age of marks in the exam.

Algebra - 35 Marks

Trigonometry - 7 Marks

Chapterwise Weightage in Algebra -

Complex Numbers & Quadratic Equations - 7

Hello!

The answer is One.

Reason/Explanation-  here, expanding the given equation,

cos2x=2cos^2x-1

we get,

6cos^2x-4cos^2x+2-3=0

2cos^2x-1=0

cos^2x=1/2

cosx=1/(2)^(1/2)

x=45 degrees.

here,

tan^2x=(tan 45)^2=1

Therefore, Answer=1.

These kind of equations must be solved by simplifying it. Hope this helps!