Further trigonometric identities, including the compound angle formulas for sin(A±B), cos(A±B) and ,
If we take the identity sin2θ+cos2θ=1 and divide through by cos2θ we find
If we take the identity sin2θ+cos2θ=1 and divide through by sin2θ we find
The double angle identity for tan states that
The compound angle identity for tan states that
Nice work completing Reciprocal and compound-angle identities, here's a quick recap of what we covered:
Exercises checked off
Further trigonometric identities, including the compound angle formulas for sin(A±B), cos(A±B) and ,
If we take the identity sin2θ+cos2θ=1 and divide through by cos2θ we find
If we take the identity sin2θ+cos2θ=1 and divide through by sin2θ we find
The double angle identity for tan states that
The compound angle identity for tan states that
Nice work completing Reciprocal and compound-angle identities, here's a quick recap of what we covered:
Exercises checked off