Consider the following formulas. a sin Be + b cos Be=a2 + b2 sin(Be + C), where C = arctan(b/a) and a > 0 a sin Be + b cos Be = √2 + b2 cos(Be - C), where C = arctan(a/b) and b > 0 Use the formulas given above to write the trigonometric expression in the following forms. 8 sin 70 + 8 cos 70 (a) Va2 + b2 sin(Be + C) (b) √²+ b2 cos(B8 - C)

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