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How to find all interval solution [0,2pi)

0 votes

cos(x-pi/2)=1/2?

asked Apr 11, 2014 in TRIGONOMETRY by rockstar Apprentice

1 Answer

0 votes

The expression is image

image

Even odd identities: image

image

Since image

image

The function is positive in first and second quadrant.

First quadrant :

image

Second quadrant :

image

image has solutions image in the interval .

answered Apr 12, 2014 by ashokavf Scholar

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