If $\sin ^{2} 35^{\circ} + \cos ^{2} \theta = 1$,then $\theta = \ldots \ldots \ldots \ldots$ (in $^{\circ}$)
- A$35$
- B$55$
- C$70$
- D$20$
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Write 'True' or 'False' and justify your answer.
The value of $2 \sin \theta$ can be $(a + \frac{1}{a}),$ where $a$ is a positive number,and $a \neq 1$.
The value of $2 \sin \theta$ can be $(a + \frac{1}{a}),$ where $a$ is a positive number,and $a \neq 1$.
Medium
View Solution$\sec (90^\circ - \theta) = \dots$
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View Solution$(\sin 80^{\circ} + \cos 10^{\circ})(\sin 80^{\circ} - \cos 10^{\circ}) = \ldots \ldots \ldots$
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