What is the answer for this

1 St ∆ belongs to accute ,2 and ∆ belongs to obtuse,3 rd ∆ belongs to right angle

Step-by-step explanation:

i.e acute belongs to <90°

obtuse angle belongs to <180°

right angle belongs to 90°

the entire expression should be subtracted from 30. to subtract the quantity, distribute the negative sign, which changes the signs on the terms. so, the –2 changes to positive and gets added to 30 instead of subtracted from it.

hope this ! ^w^