Trigonometric Properties (II)
Cofunction Properties for Circular Functions:
Cofunction Properties for Trigonometric Functions:
Composite Argument Property:
cos (A - B) = cosA cosB + sinA sinB
cos (A + B) = cosA cosB - sinA sinB
sin (A - B) = sinA cosB - cosA sinB
sin (A + B) = sinA cosB + cosA sinB
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