P.G.AT.A.6
Understand and apply the Law of Sines (including the ambiguous case) and the Law of Cosines to find unknown measurements in right and non-right triangles (such as surveying problems and resultant forces).
Khan Academy ResourcesPythagorean identity reviewUsing the trig angle addition identitiesUse the Pythagorean identityUsing trig angle addition identities: manipulating expressionsProof of the Pythagorean trig identityUsing the tangent angle addition identityUsing the Pythagorean trig identityUsing trig angle addition identities: finding side lengthsUsing the cosine angle addition identity

1-on-1 AI tutoring aligned to P.G.AT.A.6. Instant help for students, real-time insights for teachers.
Used in classrooms by 100,000+ students at Baltimore County, Plano ISD, Deer Valley USD, KIPP, and districts nationwide.
Free for teachers, forever →