Class 11MathematicsTrigonometrical Ratios, Functions and IdentitiesMaximum and minimum values of trigonometrical functions, Conditional trigonometrical identities
Difficultજો $P+Q+R=\frac{\pi}{4}$,હોય તો $\cos \left(\frac{\pi}{8}-P\right)+\cos \left(\frac{\pi}{8}-Q\right)+\cos \left(\frac{\pi}{8}-R\right)=$
- A$4 \cos \frac{P}{2} \cos \frac{Q}{2} \cos \frac{R}{2}-\cos \frac{\pi}{8}$
- B$4 \cos \frac{P}{2} \cos \frac{Q}{2} \cos \frac{R}{2}+\cos \frac{\pi}{8}$
- C$4 \sin \frac{P}{2} \cos \frac{Q}{2} \cos \frac{R}{2}-\cos \frac{\pi}{8}$
- D$4 \sin \frac{P}{2} \cos \frac{Q}{2} \cos \frac{R}{2}+\cos \frac{\pi}{8}$
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કોઈપણ વાસ્તવિક કિંમત $\theta$ માટે $3 \cos \theta + 5 \sin \left( \theta - \frac{\pi}{6} \right)$ ની મહત્તમ કિંમત કેટલી છે?
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View Solutionજો $\left| a \sin^2 \theta + b \sin \theta \cos \theta + c \cos^2 \theta - \frac{1}{2}(a + c) \right| \le \frac{1}{2}k$ હોય,તો $k^2$ ની કિંમત શું થાય?
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View Solutionધારો કે $a$ એ $(3 \cos \theta - 4 \sin \theta)$ નું મહત્તમ મૂલ્ય છે અને $\theta \neq \frac{n \pi}{2}$. જો $\alpha = a \sin^2 \theta \cos^3 \theta$ અને $\beta = a \sin^3 \theta \cos^2 \theta$ હોય,તો $\sqrt{\frac{(\alpha^2 + \beta^2)^5}{(\alpha \beta)^4}} = $
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