Trigonometry › Subtraction identities

Teacher info ▼

Simplify trig functions of differences

CCSS.MATH.CONTENT.HSF.TF.C.9
(+) Prove the addition and subtraction formulas for sine, cosine, and tangent and use them to solve problems.

LTI launch URL (help)
https://schoolyourself.org/page/lti/sy/trigonometry/trig-identities-difference

Browse lessons