RRB NTPC CBT I 16 Jan 2021 Shift 1 Paper

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Question : 42 of 100

Marks: +1, -0

If a cosθ – b sinθ = c, then find the value of a sinθ + b cosθ.

$√{a^{2} + b^{2} + c^{2}}$
± $√{a^{2} + b^{2}−c^{2}}$
$√{b^{2} + c^{2}−a^{2}}$
± $√{a^{2} + c^{2}−b^{2}}$

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