SOLUTION: find two values of theta, cos theta=square root of 2 divided by 2

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Question 220902: find two values of theta, cos theta=square root of 2 divided by 2
Answer by chibisan(131) About Me  (Show Source):
You can put this solution on YOUR website!
let theta be A..
find two values , cosA+=+sqrt%282%29%2F2
basic angle = cos^-1 sqrt%282%29%2F2%29
= 45°
cosine is positive so ..it lies on the 1st quadrant
A= 45° , 360°-45°
A= 45° , 315°.