# Sum and Difference of Angles

Pro Problems > Math > Algebra > Functions > Trigonometry > Sum and Difference of Angles# Featured Pro Problems

Find the cosine of the given angle, based on information provided on three component angles

Calculate the cos(2A), given information about angle A and a sum of angles equation

Calculate the requested trigonometric function value given information about two angles

Sine and Cosine of a sum and difference of angles - what is the value of the square of a trig function?

Solve a trig problem involving a sum of angles with pythagorean triple values

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