જો $\tan \left(\frac{\pi}{4}+\frac{\alpha}{2}\right)=\tan ^3\left(\frac{\pi}{4}+\frac{\beta}{2}\right)$ હોય,તો $\frac{3+\sin ^2 \beta}{1+3 \sin ^2 \beta}=$

  • A
    $\frac{\cos \beta}{\cos \alpha}$
  • B
    $\frac{\cos ^3 \alpha}{\sin ^3 \beta}$
  • C
    $\frac{\sin \alpha}{\sin \beta}$
  • D
    $\frac{\cos \alpha}{\cos \beta}$

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Similar Questions

$0 \leq x \leq \pi$ માટે,જો $81^{\sin ^2 x}+81^{\cos ^2 x}=30$ હોય,તો $x=$

અઋણ પૂર્ણાંકો $n$ માટે,$f(n) = \frac{\sum_{k=0}^n \sin \left(\frac{k+1}{n+2} \pi\right) \sin \left(\frac{k+2}{n+2} \pi\right)}{\sum_{k=0}^n \sin ^2\left(\frac{k+1}{n+2} \pi\right)}$ લો. ધારો કે $\cos ^{-1} x$ એ $[0, \pi]$ માં કિંમતો લે છે,તો નીચેનામાંથી કયા વિકલ્પો સાચા છે?
$(1)$ $\sin \left(7 \cos ^{-1} f(5)\right)=0$
$(2)$ $f(4)=\frac{\sqrt{3}}{2}$
$(3)$ $\lim _{n \rightarrow \infty} f(n)=\frac{1}{2}$
$(4)$ જો $\alpha=\tan \left(\cos ^{-1} f(6)\right)$ હોય,તો $\alpha^2+2 \alpha-1=0$

જો $\sin \theta \cosh \alpha = \tan x$ અને $\cos \theta \sinh \alpha = \sec x$ હોય,તો $\cos 2 \theta \cosh 2 \alpha$ ની કિંમત શોધો.

$(\sec A + \tan A - 1)(\sec A - \tan A + 1) - 2\tan A = $

કિંમત શોધો: $\cos^2 76^\circ + \cos^2 16^\circ - \cos 76^\circ \cos 16^\circ$

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