Class 11MathematicsTrigonometrical Ratios, Functions and IdentitiesMix Examples-Trigonometrical Ratios, Functions and Identities
Easyજો $\sin A + \cos A = \sqrt{2}$ હોય,તો $\cos^2 A = $
- A$\frac{1}{4}$
- B$\frac{1}{2}$
- C$\frac{1}{\sqrt{2}}$
- D$\frac{3}{2}$
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Similar Questions
જો $\operatorname{cosec} \theta = \frac{p+q}{p-q}$ હોય,તો $\cot \left(\frac{\pi}{4} + \frac{\theta}{2}\right)$ ની કિંમત શોધો.
$\frac{\cos 13^{\circ}-\sin 13^{\circ}}{\cos 13^{\circ}+\sin 13^{\circ}}+\frac{1}{\cot 148^{\circ}}$ ની કિંમત શોધો.
ધારો કે $n$ એક ધન પૂર્ણાંક છે જેથી $\sin \frac{\pi }{2^n} + \cos \frac{\pi }{2^n} = \frac{\sqrt{n}}{2}$ થાય. તો
DifficultIIT 1994
View Solution$\cos ^2 76^{\circ}+\sin ^2 46^{\circ}+\sin 76^{\circ} \cos 46^{\circ} = $
$\cos ^2 76^{\circ}+\cos ^2 16^{\circ}-\cos 76^{\circ} \cos 16^{\circ}$ ની કિંમત શોધો.
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