Answers

The Brainliest Answer!
2014-08-23T17:22:32+05:30
 cosec^{2}45 = 2
sin30 =  \frac{1}{2}
tan45 = 1
sec^{2}45 = 2
sin^{2}60 =  \frac{3}{4}
cos^{2}45=  \frac{1}{2}

now put the values...

 \frac{(2 +  \frac{1}{2})(1 + 2 ) }{ \frac{3}{4} *  \frac{1}{2}  }  

 \frac{ \frac{(4+1)(3)}{2} }{ \frac{3}{8}}

 \frac{ \frac{15}{2} }{ \frac{3}{8} }

 \frac{15 * 8}{3 * 2}

=20

2 5 2