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Trigonometrical Equations
normal
જો $\sin \,\theta + \sqrt 3 \cos \,\theta = 6x - {x^2} - 11,x \in R$ , $0 \le \theta \le 2\pi $ હોય તો સમીકરણોના ............. ઉકેલો મળે
A
એક
B
બે
C
અનંત
D
શૂન્ય
Solution
$\sin \theta+\sqrt{3} \cos \theta=-2-(x-3)^{2}$
minimum vlaue of $\sin \theta+\sqrt{3} \cos \theta$ is $-2$
Hence solution of equation is possible only if $x=3$
Standard 11
Mathematics