Các bạn giúp mình với . Tks nhiu nha. Làm woai ko ra ,chán lun. hjhj.
Gọi A,B,C là 3 góc của một tg không có góc vuông.Chứng minh:
tag (A+B) +tag (B+C) + Tag ( A+C) = tag (A+B) . tag (B+C) . Tag ( A+C)
K
Khách
Hãy nhập câu hỏi của bạn vào đây, nếu là tài khoản VIP, bạn sẽ được ưu tiên trả lời.
Những câu hỏi liên quan
NB
1
25 tháng 10 2023
1. Who drove to the farm?
They drove to the farm, didn't they?
2. What do they want?
They want the perfect tree, don't they?
3. What exactly did they want?
The tree was exactly what they wanted, wasn't it?
SV
Sinh Viên NEU
CTVVIP
25 tháng 10 2023
1 Where did they drive to?
- They drove to the farm, didn't they?
2 What did they want?
- They want the perfect tree, don't they?
3 Which was exactly what they wanted?
- The tree was exactly what they wanted, wasn't it