4. C and D both are correct
12. H
11. B
Answer:
collection of objects
Step-by-step explanation:
set is a collection of objects, things or figures.
Okay first, use the sin rule (

so

sin^-1 this and you get 47.928....this is angle ADB
and as it is on a straight line, 180 - this angle gets ADC
180 - 47.928.... = 132.07
Answer:
15x*45 i think
Step-by-step explanation: