
Grade 12Trigonometry
express acos x+ bcosx in the form of k cosy where k=sqrt of a^2 +b^2;y=x-m ,ksiny where k=sqrt of a^2 +b^2y=x+m.
express acos x+ bcosx in the form of k cosy where k=sqrt of a^2 +b^2;y=x-m ,ksiny where k=sqrt of a^2 +b^2y=x+m.

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