You should try Google it helps
15.01
tan(65) = BC/7
BC = 7*tan(65)
6 & 5 and 2&3 are the adjacent angles
2nd answer is correct
go to your profile click on picture and you can add one
Question 1 and 2 are both opposite angels, so 1.) 115° and 2.) 41° to find 3 you subtract the given angle from 180°, so 3.) = 135°. for question four, it shows you that the one angle is 90°, so all the angles are the same 4.) 90° for five, you subtract the given angle from 180°, getting 155°. 5.) 155°. Finally for 6, x is equal to and opposite of the given angle. 6.) 135°.. I'm not sure what they're asking for the rest tho, so sorry about that.
Recap:
1.) 115°
2.) 41°
3.) 135°
4.) 90°
5.) 155°
6.) 135°
Hope I was able to help at least a little! :)