Sin2a/2cosa; sin2a/sina; 3cos^a/sin2a; cos2a/sina+cosa пж)))

Question

Sin2a/2cosa; sin2a/sina; 3cos^a/sin2a; cos2a/sina+cosa пж)))

Answer 1

1. ...=2sinacosa/2cosa=sina
2. ...= 2sinacosa/sina = 2cosa
3. ... = 3cos^a/2sinacosa=3cosa/2sina=3/2 tga
4. еще думаю как сделать