જો $(1 + \tan \theta )(1 + \tan \phi ) = 2$ હોય,તો $\theta + \phi = \dots ^\circ$

  • A
    $30$
  • B
    $45$
  • C
    $60$
  • D
    $75$

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Similar Questions

જો $A + B = \frac{\pi}{4}$ હોય,તો $(1 + \tan A)(1 + \tan B) = $

જો $\sin \theta = \frac{12}{13}$ જ્યાં $0 < \theta < \frac{\pi}{2}$ અને $\cos \phi = -\frac{3}{5}$ જ્યાં $\pi < \phi < \frac{3\pi}{2}$ હોય,તો $\sin(\theta + \phi)$ ની કિંમત શોધો.

$\frac{\tan 70^o - \tan 20^o}{\tan 50^o}$ ની કિંમત શોધો.

$\tan 15^\circ = $

જો $\cos (\alpha+\beta)=\frac{4}{5}$,$\sin (\alpha-\beta)=\frac{5}{13}$ અને $\alpha, \beta$ એ $0$ અને $\frac{\pi}{4}$ ની વચ્ચે હોય,તો $\tan 2 \alpha$ ની કિંમત શોધો.

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