Question

◆PlZzzz HELP...◆


●plz solve this..and provide the Answr....

Answer 1

$Given : \frac{1}{sin 10} - \frac{ \sqrt{3} }{cos 10}$

On Cross-multiplication, we get

$\frac{cos 10 - \sqrt{3} sin 10}{sin10 cos 10}$

On Dividing by 2, we get

$\frac{2( \frac{1}{2} * cos 10 - \frac{ \sqrt{3} }{2} * sin 10)}{sin10 cos 10}$

$\frac{2(sin30 cos 10 - cos 30 sin 10)}{sin 10 cos 10}$

We know that sinacosb-cosasinb = sin(a-b)

$\frac{2(sin(30 - 10))}{sin10cos10}$

$\frac{2 sin 20}{sin10cos10}$

$\frac{4 sin 20}{2 sin 10 cos 10}$

We know that 2 sinA cos B = sin(A + B) + sin(A - B)

$\frac{4 sin 20}{sin 20}$

4.


Hope this helps!

Answer 2

Hi,

Please see the attached file!


Thanks