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If X,Y are two acute angles in a right triangle XYZ such that cosX=cosY then show that angleX = angleY.​

By Savannah

If X,Y are two acute angles in a right triangle XYZ such that cosX=cosY then show that angleX = angleY.​

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Savannah

Q.16. If 18, a, (b-3) are in AP, then find the value of (2a-b).​

23) Two events A and B defined on
the sample space S are said to be
exhaustive if AUB= *
O a) ()
O b) s
O

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