8. Introduction to Trigonometry
easy

$\sec \theta=1,$ તો $\theta=\ldots \ldots \ldots$

A

$0$

B

$45$

C

$60$

D

$90$

Solution

$\sec \theta=1 \, \therefore \cos \theta=1 .$ But, $\cos 0=1 \, \therefore \theta=0$

Standard 10
Mathematics

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