1.

sin 5 + sin 10 + sin 15 + .... + sin 85 + sin 90 is equal to

A. <table><tr><td rowspan="2">7</td><td style="border-bottom:1px solid #000000;vertical-align:bottom;padding-bottom:2px;"><center>1</center></td></tr><td align="center">2</td></table>
B. <table><tr><td rowspan="2">8</td><td style="border-bottom:1px solid #000000;vertical-align:bottom;padding-bottom:2px;"><center>1</center></td></tr><td align="center">2</td></table>
C. 9
D. <table><tr><td rowspan="2">9</td><td style="border-bottom:1px solid #000000;vertical-align:bottom;padding-bottom:2px;"><center>1</center></td></tr><td align="center">2</td></table>
Answer» E.


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