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Sahay Sir > Question Answers > NCERT Class 10 > Maths > Chapter 8 - Introduction to Trigonometry > If a sinθ + b cosθ = c, then prove that a cosθ – b sinθ = a^2+b^2+c^2−−√.

If a sinθ + b cosθ = c, then prove that a cosθ – b sinθ = a^2+b^2+c^2−−√.