Which trigonometric function is used to find the angle between a line and a plane?

(a) Tangent

(b) Cosecant

(c) Secant

(d) Sine

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The correct option is (d) Sine

Explanation: The trigonometric function is used to find the angle between a line and a plane is sine. If θ is the angle between line whose ratios are a1, b1, c1 and the plane ax + by + cz + d = 0 then sin θ=\frac {a1a2.b1b2.c1c2}{\sqrt {a^2+b^2+c^2} \sqrt{a1^2+b1^2+c1^2 }}.