SOLUTION: How can i find the value of sin25 degrees.

Question 677073: How can i find the value of sin25 degrees.
Answer by jsmallt9(3758) (Show Source): You can put this solution on YOUR website!
This should be pretty easy if you can use a calculator (or calculator program on your computer). Just make sure the calculator is set to work in degrees.

If you are supposed to find an exact value for sin(25), then you must find some expression involving special angles (and possibly factors of 1/2 or 2) that is equal to 25. Then you use sin(A+B), sin(A-B), sin(2x) or sin((1/2)x) to find the value you're looking for. For example:

which is an exact expression for sin(75).

However I am having trouble finding such an expression for sin(25).
There are plenty of expressions that are equal to 25:
45 - 20 (but 20 is not a special angle)
60 - 35 (but 35 is not a special angle)
(1/2) * 50 (but 50 is not a special angle)
2 * 12.5 (but 12.5 is not a special angle)
315 - 290 (but 290 is not a special angle)
(1/2) * (1/2) * 100 (but 100 is not a special angle)
etc.
Perhaps you'll have better luck finding some combination that involves special angles (and possibly factors of 1/2 or 2).
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