Question
Mathematics Question on Linear Equations
Let S be the set of all values of θ Ε [-π, π] for which the system of linear equations
x+y+√3z=0
-x+(tanθ)y+ √7z=0
x+y+(tanθ)z = 0 has non-trivial solution.
Then 120/π ∑θθ∈s is equal to
A
10
B
20
C
30
D
40
Answer
20
Explanation
Solution
The correct option is(B): 20