The value of cos 255 + sin 195 is

Question:

The value of $\cos 255^{\circ}+\sin 195^{\circ}$ is

  1. $\frac{\sqrt{3}-1}{2 \sqrt{2}}$

  2. $\frac{\sqrt{3}-1}{\sqrt{2}}$

  3. $-\left(\frac{\sqrt{3}-1}{\sqrt{2}}\right)$

  4. $\frac{\sqrt{3}+1}{\sqrt{2}}$

Correct Option: 3

JEE Main Previous Year 1 Question of JEE Main from Mathematics Trigonometry chapter.
JEE Main Previous Year Online May 26, 2012

Solution:

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