If a line makes the angles alpha , beta  and gamma with the axes, then what is the value of 1 + cos 2 alpha +

### Question Asked by a Student from EXXAMM.com Team

Q 2389745617.     If a line makes the angles alpha , beta  and gamma with the axes,
then what is the value of

1 + cos 2 alpha + cos 2 beta + cos 2 gamma ?
NDA 2012 Paper 1
A

-1

B

0

C

1

D

2`

#### HINT

(Provided By a Student and Checked/Corrected by EXXAMM.com Team)

#### Access free resources including

• 100% free video lectures with detailed notes and examples
• Previous Year Papers
• Mock Tests
• Practices question categorized in topics and 4 levels with detailed solutions
• Syllabus & Pattern Analysis