3.Trigonometrical Ratios, Functions and Identities
easy

यदि ${\rm{cosec }}A + \cot A = \frac{{11}}{2},$ तो $\tan A = $

A

$\frac{{21}}{{22}}$

B

$\frac{{15}}{{16}}$

C

$\frac{{44}}{{117}}$

D

$\frac{{117}}{{43}}$

Solution

${\rm{cosec}}\,A + \cot A = \frac{{11}}{2} $

$\Rightarrow {\rm{cosec}}\,A – \cot A = \frac{2}{{11}}$

अत: $2\cot A = \frac{{117}}{{22}}$

$\Rightarrow \tan A = \frac{{44}}{{117}}$.

 

.

Standard 11
Mathematics

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