an addition formula because of the sum A + B appearing the formula. Note that it enables us to express the sine of the sum of two angles in terms of the sines and cosines of the individual angles. sin(A − B) ... = sin A cosB − cos A sin B This is the second of our addition formulae.
sin(A + B) = sin A cosB + cosA sin B. This is called an addition formula because of the sum A + B appearing the formula. Note that it enables us to express the sine of the sum of two angles in terms of the sines and cosines of the individual angles.
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Answer:
an addition formula because of the sum A + B appearing the formula. Note that it enables us to express the sine of the sum of two angles in terms of the sines and cosines of the individual angles. sin(A − B) ... = sin A cosB − cos A sin B This is the second of our addition formulae.
Answer:
sin(A + B) = sin A cosB + cosA sin B. This is called an addition formula because of the sum A + B appearing the formula. Note that it enables us to express the sine of the sum of two angles in terms of the sines and cosines of the individual angles.
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