$\cos 35=\ldots \ldots \ldots$
$\cos 55$
$\sin 55$
$\sec 35$
$\operatorname{cosec} 35$
$\cos 35=\sin (90-35)=\sin 55$
For acute angle $\theta,$ if $\cos \theta=\sin \theta,$ then $2 \tan ^{2} \theta+\sin ^{2} \theta+1=\ldots \ldots \ldots \ldots$
$\operatorname{cosec} \theta=\sqrt{2}$, then the value of $\tan \theta \ldots \ldots \ldots \ldots$
$8 \sin ^{2} 45-2 \tan ^{2} 60+3 \cot ^{2} 30-2 \cos ^{2} 45$
The value of $\tan 5 \cdot \tan 25 \cdot \tan 45 \cdot \tan 65 \cdot \tan 85$ is $\ldots \ldots \ldots \ldots .$.
If $A=30,$ then the value of $\cos 2 A$ is $\ldots \ldots \ldots . .$
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