BANKING Content

RRB ALP 21st Aug 2018 Shift-2 Question 9

Question 9

If $$\sec \theta + \tan \theta = 2, $$then $$\sec \theta - \tan \theta = ?$$

Solution

The correct option is A.

We know that, $$sec^{2}\theta- \tan^{2}\theta = 1$$

$$\Rightarrow$$ ($$sec\theta+ tan\theta$$)($$sec\theta - tan\theta$$) = 1

$$\Rightarrow$$             2 $$\times$$ ( $$sec\theta - tan\theta$$) = 1

$$\Rightarrow$$.            $$sec\theta - tan\theta$$ = 0.5



Create a FREE account and get:

  • Download RRB Study Material PDF
  • 45+ RRB previous papers with solutions PDF
  • 300+ Online RRB Tests for Free

Comments

Register with

OR

Boost your Prep!

Download App