trigonometric formulas for compound angles
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sin(A + B) = sinA cosB + coA sinB.
sin(A – B) = sinA cosB – cosA sinB.
cos(A + B) = cosA cosB – sinA sinB.
cos(A – B) = cosA cosB + sinA sinB.
tan(A + B) = tanA + tan B/ 1 - tan A tanB.
tan(A – B) = tanA - tan B/ 1 + tan A tan B
hope this may help you
sin(A – B) = sinA cosB – cosA sinB.
cos(A + B) = cosA cosB – sinA sinB.
cos(A – B) = cosA cosB + sinA sinB.
tan(A + B) = tanA + tan B/ 1 - tan A tanB.
tan(A – B) = tanA - tan B/ 1 + tan A tan B
hope this may help you
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