Discuz Math Forum»Forum › Mathematics › High School › 一道三角题

Return to list New

View 2128|Reply 2

[函数] 一道三角题

[Copy link]

10 Threads	26 Posts	0 Reputation

Send PM

chr93918 posted 2013-12-28 20:06 |Read mode

在三角形ABC中，cosb/sina+cosa/sinb=2,求证此三角形是直角三角形

Reply Edit 0

673 Threads	110K Posts	218 Reputation

Send PM

kuing posted 2013-12-28 20:17

见 bbs.pep.com.cn/thread-652343-1-1.html

Reply Edit

10 Threads	26 Posts	0 Reputation

Send PM

original poster chr93918 posted 2013-12-28 21:07

谢谢

Reply Edit

Return to list New

Quick Reply

× Quick Reply To Top Edit

2025-7-15 15:26 GMT+8

Powered by Discuz!

Processed in 0.011455 seconds, 22 queries