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WHY SIN 90+X=COSX. PROVE IT GRAPHICALLY OR DIAGRAMATICALLY.

Asked by eswarpremsai9i 22nd June 2015, 10:43 PM
Answered by Expert
Answer:
Consider the following graph of sin(90+x).
 
Now consider the graph of cos(x):
By seeing the above two graphs, it is clear that sin(90+x) = cos(x).
Answered by Expert 23rd June 2015, 10:58 AM
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