If cos(α−β)=1 and (cos(α+β)=1e, −π<α,β<π, then total numbe – InterviewSolution

1.	If cos(α−β)=1 and (cos(α+β)=1e, −π<α,β<π, then total number of ordered pair of (α,β) is
Answer» If $c o s (α - β) = 1$ and $(c o s (α + β) = \frac{1}{e}$ , $- π < α, β < π$ , then total number of ordered pair of $(α, β)$ is

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