SOLUTION: The value of cos10°-sin10° is A)positive B)negative C)0 D)none of these

Algebra.Com
Question 1000640: The value of cos10°-sin10° is
A)positive
B)negative
C)0
D)none of these
Found 2 solutions by Edwin McCravy, Alan3354:
Answer by Edwin McCravy(20056)   (Show Source): You can put this solution on YOUR website!
In the first quadrant:

The sine and cosine are the same at 45°.  Above that
the sine is larger, below that the cosine is larger.

10° is below 45°, so the cosine is larger and therefore 
cos10°-sin10° is positive.

Edwin
Answer by Alan3354(69443)   (Show Source): You can put this solution on YOUR website!
None of these?
An interesting option.
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