B. Calculate the quotient of 109.2 - 6 using any method of your choice.

Which sum or difference identity would you use to verify that cos (180° - ∅) = -cos ∅? a. sin (α -β) = sin α cos β – cos α sin β b. cos (α -β) = cos α cos β – sin α sin β c. cos (α -β) = cos α cos β + sin α sin β d. sin (α + β) = sin α cos β + cos α sin β

Solve the following pair of equations for x and y: ax/b_ by /a= a +b; ax - by = 2ab

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