1. 53tan245°sec230°+sin245° \(=\)
 
The value of given expression is
 
 
2. 7tan60°.sec0°.tan45°1sin230° \(=\)
 
The value of given expression is
Answer variants:
\(0\)
\(1\)
2833
\(\frac{1}{6}\)
\(\frac{\sqrt{5}}{2}\)
=56