Question

Evaluate 8 3 Sin 60 , Cos 45 , tan 30 , CoSec 45

Answer 1

Answer:

$83sin60 \times cos45 \times \tan30 \times cosec45$

$= 83( \frac{ \sqrt{3} }{2} ) \times \frac{1}{ \sqrt{2} } \times \frac{1}{ \sqrt{3} } \times \sqrt{2}$

$= \frac{83 \sqrt{3} }{2} \times \frac{ \sqrt{2} }{ \sqrt{6} }$

$= \frac{83 \sqrt{3} }{2 \sqrt{6} }$

$= \frac{83}{2 \sqrt{2} } \times \frac{ \sqrt{2} }{ \sqrt{2} }$

$= \frac{83 \sqrt{2} }{2 \times 2}$

$= \frac{83 \sqrt{2} }{4}$