Given》 a cosQ - b sinQ = cTo prove》a sinQ + bcosQ = +_ in square root(a sq. +b sq. +c sq.)

Given》 a cosQ - b sinQ = cTo prove》a sinQ + bcosQ = +_ in square r

1.	Given》 a cosQ - b sinQ = cTo prove》a sinQ + bcosQ = +_ in square root(a sq. +b sq. +c sq.)
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