A line makes angles α, β and γ with the co-ordinate axes. If α + β = 90°, then γ is equal to
A. 0°
B. 90°
C. 180°
D. None of these
Answer:B
A line makes angles α, β and γ with the co-ordinate axes. If α + β = 90°, then γ is equal to
A. 0° B. 90° C. 180° D. None of these