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Evaluate using the sum and difference formulas
In this video, I will show you how to evaluate an angle in degrees using the sum formula of cosine. We will need to use the ...
Divide any circle’s circumference by its diameter and you get pi. But what, exactly, are its digits? Measuring physical ...
Jonathan Borwein (Jon) receives funding from the Australian Research Council. Often described as “the most beautiful formula in mathematics”, Euler seems never to have actually written it down – ...
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Sum and Difference Formulas Evaluate
In this video I will show you how to evaluate the tangent of -75 degrees. We will do this by breaking up negative 75 degrees to 45 -120. We will then apply the difference formula for tangent and ...
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