1) What is Trigonometry ? Explain ? Don't copy from web !
Give answer in ur own words !

Trigonometry is the study of triangles – more specifically, the study of the angles and dimensions of triangles. Although this might sound simple, trigonometry is a vital part of modern engineering, design, architecture and other fields.

4+n=5

step-by-step explanation:

this is because the four is four hours and the n represents the 1 extra hour over the weekend.

b= i'm srry i don't know that one.

4+n=5 n=1 because if vernon plays 5 hours a week then 4+1=5 hours.

hope this : )