Test Academy | The plane 2x – 3y + 6z – 11 = 0 makes an angle sin-1 (α) with .e-axis. The value of a is equal to √3/2, √2/3, 2/7, 3/7

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The plane 2x – 3y + 6z – 11 = 0 makes an angle sin-1 (α) with .e-axis. The value of a is equal to

Options :

√3/2
√2/3
2/7
3/7

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