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evablogger [386]
3 years ago
5

60 PNTS and Brainliest to whoever answers all 3 correctly!! I will be double checking the work....

Mathematics
1 answer:
Taya2010 [7]3 years ago
4 0
1)
-280 
= -14<span>π / 9
answer is B.
----------------------

2)
3</span><span>π/ 5 
</span><span>= 108

answer
C. 108 degrees

3)
cos (3</span>π/4) = -√2 / 2
sin ((3π/4) = √2 / 2
cos (3π/4) and sin ((3π/4) = -√2 / 2 * √2 / 2
<span>
answer is
</span> -√2       √2 
------ * --------
  2          2<span>


</span>
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