Class 11MathematicsTrigonometrical Ratios, Functions and IdentitiesMix Examples-Trigonometrical Ratios, Functions and Identities
Difficultકિંમત શોધો: $\sin ^2 18^{\circ}+\sin ^2 24^{\circ}+\sin ^2 36^{\circ}+\sin ^2 42^{\circ}+\sin ^2 78^{\circ}+\sin ^2 90^{\circ}+\sin ^2 96^{\circ}+\sin ^2 102^{\circ}+\sin ^2 138^{\circ}+\sin ^2 162^{\circ}$
- A$\frac{11}{2}$
- B$\frac{9}{2}$
- C$5$
- D$4$
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Similar Questions
$\frac{1-\cos(2x)+\sin(x)}{\sin(2x)+\cos(x)} = $
બધી જોડીઓ $(x, y)$ જે અસમતા $2^{\sqrt{\sin^2 x - 2 \sin x + 5}} \cdot \frac{1}{4^{\sin^2 y}} \leq 1$ નું સમાધાન કરે છે,તે નીચેનામાંથી કયા સમીકરણનું પણ સમાધાન કરે છે?
સમીકરણ $\frac{1}{\sin(\frac{\pi}{n})} = \frac{1}{\sin(\frac{2\pi}{n})} + \frac{1}{\sin(\frac{3\pi}{n})}$ નું સમાધાન કરતું $n > 3$ નું ધન પૂર્ણાંક મૂલ્ય શોધો.
DifficultIIT 2011
View Solutionજો $\operatorname{cosec} \theta + \cot \theta = 5$ હોય,તો $\sin \theta = $
જો $\cos x + \sin x = \frac{1}{2}$ અને $0 < x < \pi$ હોય,તો $\tan x =$
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