Trigonometric identities including sin2θ+cos2θ=1,
For any value of θ:
The double angle identity for sin states that
The double angle identity for cosine states that
These three different forms come from leveraging sin2θ+cos2θ=1.
Nice work completing Pythagorean and double-angle identities, here's a quick recap of what we covered:
Exercises checked off
Trigonometric identities including sin2θ+cos2θ=1,
For any value of θ:
The double angle identity for sin states that
The double angle identity for cosine states that
These three different forms come from leveraging sin2θ+cos2θ=1.
Nice work completing Pythagorean and double-angle identities, here's a quick recap of what we covered:
Exercises checked off