Answer:
Step-by-step explanation:
Xét ∆ABC có:
C= 180-30-45=105°
D= 180-105-45÷2= 75-22,5= 52,5°
Hope this helps.
r3t40
<4
Look it up
1395 is the lower bound because 1395 rounded to the nearest 10 is 1400 but 1394 rounded to the nearest 10 is 1390.