SOLUTION: If cos β = -3/5 then, without a calculator, find cos( π/2 - β) and express your answer as a fraction.

Algebra ->  Functions -> SOLUTION: If cos β = -3/5 then, without a calculator, find cos( π/2 - β) and express your answer as a fraction.      Log On


   

Question 1165340: If cos β = -3/5 then, without a calculator, find cos( π/2 - β) and express your answer as a fraction.
Answer by solver91311(24713) About Me  (Show Source):
You can put this solution on YOUR website!


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See the formula for the cosine of the difference between two angles.











John

My calculator said it, I believe it, that settles it


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