Trigonometrical Equations
easy

સમીકરણ $a\sin x + b\cos x = c$ , કે જ્યાં $|c|\, > \,\sqrt {{a^2} + {b^2}}$ ના ઉકેલની સંખ્યા મેળવો.

A

$1$

B

$2$

C

અનંત

D

એકપણ નહીં.

Solution

(d) $\frac{a}{{\sqrt {{a^2} + {b^2}} }}\sin x + \frac{b}{{\sqrt {{a^2} + {b^2}} }}\cos x = \frac{c}{{\sqrt {{a^2} + {b^2}} }}$

$\sin (x + \alpha ) = \frac{c}{{\sqrt {{a^2} + {b^2}} }} > 1$, (as given)

Hence there is no solution.

Standard 11
Mathematics

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