Respuesta :

khemchauhan33

Answer:

if correct mark as brainliest

Step-by-step explanation:

sinC + sinD=

[tex]2sin \frac{c + d}{2} \times cos \frac{c - d}{2} [/tex]

sin3theta=

[tex]3sin \: theta - 4 \sin ^{3} theta[/tex]