1. Prove the identity
a. tanθ cos θ

Answer:
[tex] \sin0[/tex]
Step-by-step explanation:
[tex] \tan0 \cos0 = \frac{ \sin0 }{ \cos0} \cos0 \\ \\ [/tex]
Therefore,
[tex] \tan0 \cos0 \: = \sin0 [/tex]