3.Trigonometrical Ratios, Functions and Identities
easy

यदि $\sin x = \frac{{ - 24}}{{25}},$ तब $\tan \, x$ का मान होगा 

A

$\frac{{24}}{{25}}$

B

$\frac{{ - 24}}{7}$

C

$\frac{{25}}{{24}}$

D

इनमें से कोई नहीं

Solution

(b) $\cos x = \sqrt {1 – {{\sin }^2}x} $

$= \sqrt {1 – {{\left( {\frac{{ – 24}}{{25}}} \right)}^2}} = \frac{7}{{25}}$

$ \Rightarrow \tan x = \frac{{\sin x}}{{\cos x}} = \frac{{ – 24}}{7}$.

Standard 11
Mathematics

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