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[" If "3sin alpha=5sin beta," then find ...

[" If "3sin alpha=5sin beta," then find the value of "(alpha-beta)/(2)],[" If "alpha,beta" are different values of "theta" satisfying the equation "5cos theta-12sin theta=11." If the value of "],[" If "alpha,beta" are different values of "theta" satisfying the equation "5cos theta-12sin theta=11." If the value of "],[" if "(alpha+beta)=-(5k)/(169)" ,then find the value of "k" ."]

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