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OK, in an example, we are given:
"T(θ)= 2 cos^2 (θ) +sin^2 (θ) − sin (θ) + 3
=cos^2 (θ) − sin θ + 4.
Then Tθ(θ)= −2 cos θ sin θ − cos θ =
−cos θ(2 sinθ + 1)"
can anyone explain what happened from step 1 to 2--i am completely lost?
Thanks.
"T(θ)= 2 cos^2 (θ) +sin^2 (θ) − sin (θ) + 3
=cos^2 (θ) − sin θ + 4.
Then Tθ(θ)= −2 cos θ sin θ − cos θ =
−cos θ(2 sinθ + 1)"
can anyone explain what happened from step 1 to 2--i am completely lost?
Thanks.