Question

find the value of
:
i] cos o=9 find
sin otano.
u​

Answer 1

Answer:

$\cos(o) = 9$

we know that

${ \sin}^{2} o + \cos^{2} o = 1$

therefore

${ \sin}^{2} o = 1 - 81$

so

$\sin(o) = \sqrt[4]{5}$

now we also know that

$\tan(o) = \frac{ \sin(o) }{ \cos(o) }$

therefore

$\tan(o) = \frac{ \sqrt[4]{5} }{9}$

thanks