1.

What is the value of cos 105 ?

A. <table><tr><td style="border-bottom:1px solid #000000;vertical-align:bottom;padding-bottom:2px;"><center>1 - <span style=" text-decoration: overline;">3</span></center></td></tr><tr><td style="text-align: center;">2 <span style=" text-decoration: overline;">2</span></td></tr></table>
B. <table><tr><td style="border-bottom:1px solid #000000;vertical-align:bottom;padding-bottom:2px;"><center>1 + <span style=" text-decoration: overline;">3</span></center></td></tr><tr><td style="text-align: center;">2 <span style=" text-decoration: overline;">2</span></td></tr></table>
C. <table><tr><td style="border-bottom:1px solid #000000;vertical-align:bottom;padding-bottom:2px;"><center> <span style=" text-decoration: overline;">3</span> - 1</center></td></tr><tr><td style="text-align: center;">2 <span style=" text-decoration: overline;">2</span></td></tr></table>
D. <table><tr><td style="border-bottom:1px solid #000000;vertical-align:bottom;padding-bottom:2px;"><center> <span style=" text-decoration: overline;">3</span></center></td></tr><tr><td style="text-align: center;">2 <span style=" text-decoration: overline;">2</span></td></tr></table>
Answer» B. <table><tr><td style="border-bottom:1px solid #000000;vertical-align:bottom;padding-bottom:2px;"><center>1 + <span style=" text-decoration: overline;">3</span></center></td></tr><tr><td style="text-align: center;">2 <span style=" text-decoration: overline;">2</span></td></tr></table>


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