The coordinate axes are rotated through an angle of $135^o$. If the coordinates of a point $P$ in the new system are $(4, -3)$,then the coordinates of $P$ in the original system are:

  • A
    $\left( \frac{1}{\sqrt{2}}, \frac{7}{\sqrt{2}} \right)$
  • B
    $\left( \frac{1}{\sqrt{2}}, \frac{-7}{\sqrt{2}} \right)$
  • C
    $\left( \frac{-1}{\sqrt{2}}, \frac{-7}{\sqrt{2}} \right)$
  • D
    $\left( \frac{-1}{\sqrt{2}}, \frac{7}{\sqrt{2}} \right)$

Explore More

Similar Questions

Let $f(x)=15-|x-10| ; x \in R$. Then,the set of all values of $x$,at which the function $g(x)=f(f(x))$ is not differentiable,is

The major product of the following reaction is

The floral formula (image) is that of

The electric potential $V$ at any point $(x, y, z)$ (all in $m$) in space is given by $V = 4x^2 \, V$. The electric field at the point $(1 \, m, 0, 2 \, m)$ in $V/m$ is:

Which of the following is $NOT$ produced by the reaction of ethanol with $H_2SO_4$?

Vedclass Products

For Students

Vedclass Test Series

Mock tests in real JEE/NEET style with performance analysis. 5-day free trial.

Start Free Trial
For Teachers

Exam Paper Generator

Generate Set A/B/C/D exam papers from 7.5L+ questions in 2 minutes. 3 chapters free.

Try Free
For Institutes

Online Exam Module

Live online exams with unlimited students, 360° analytics & white-label branding.

See Demo