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

** Q 2349023813. ** If a line makes `30^(circ)` with the positive direction of

`X`-axis, `angle beta` with the positive direction of `Y`-axis and

` angle gamma` with the positive direction of `Z`- axis , then what

is `cos^2 beta + cos^2 gamma` equal to?

**NDA 2013 Paper 1 **