SOLUTION: If sin (x+30)° = cos 40°, find x?

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Question 1192726: If sin (x+30)° = cos 40°, find x?
Answer by ikleyn(52814) About Me  (Show Source):
You can put this solution on YOUR website!
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If sin (x+30°) = cos 40°, then


    (x+30°) + 40° = 90°.


From this equation,  x = 90° - 30° - 40° = 20°.


ANSWER.  x = 20°.

Solved.