find cos90.sin1080+cos428.sin 1050
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cos90.sin90+cos428.sin1050
(0)(1)+cos(360+68).sin(360*2+130)
cos68.sin130
(0.44)*(-0.93)
-0.4092
(0)(1)+cos(360+68).sin(360*2+130)
cos68.sin130
(0.44)*(-0.93)
-0.4092
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