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CBSE Class 11-science Answered

In the video where you explained the formula of sin(x+y)the angle CBA is not equal to x. It is commoning y can you explain the angle of CBA
Asked by | 20 Jul, 2012, 09:07: PM
answered-by-expert Expert Answer
 
Since BE is perpendicular to OD, so angle BEO is 90 degrees.
So, in triangle POE, angle OPE = 90 - x (using angle sum property)
 
So, angle CPA is also 90 - x (vertically opposite angles)
 
In right triangle APB, by angle sum property, we get,
angle ABP = x
That is, angle CBA = x
Answered by | 24 Jul, 2012, 04:59: PM
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