Question Asked by a Student from EXXAMM.com Team

Q 1327212181.     A line makes angle theta with x and z axis. If it makes angle beta with y axis, where sin^2 beta=3sin^2theta, then cos^2 theta=?
A

frac{2}{3}

B

frac{1}{5}

C

frac{3}{5}

D

frac{2}{5}

HINT

Given that the line makes angle theta with x :and  z :axis and beta with y-axis. therefore cos^2 theta+cos^2 theta+cos^2 beta=1

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

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