Let \( \lambda \) and \( \alpha \) be real. Then the number of integral values \( \lambda \) for... VIDEO
Let \( \lambda \) and \( \alpha \) be real. Then the number of integral values \( \lambda \) for which the system of linear equations
\[
\begin{array}{l}
\lambda x+(\sin \alpha) y+(\cos \alpha) z=0 \\
x+(\cos \alpha) y+(\sin \alpha) z=0
\end{array}
\]
\( -x+(\sin \alpha) y-(\cos \alpha) \mathrm{z}=0 \) has non-trivial solutions is
(a) 0
(b) 1
(c) 2
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