Перетворити у добуток і спростити:

1)cos 20°-sin20°

2)cosa+cos2a+cos3a+cos4a

3)sina+sin2a+sin3a+sin4a

Please enter comments
Please enter your name.
Please enter the correct email address.
You must agree before submitting.

Answers & Comments


Copyright © 2024 SCHOLAR.TIPS - All rights reserved.