Question

explain me what should I do in this

Answer 1

i am not aware of the answer..... i am unable to answer

Answer 2

(A)See u can make a 3D figure and show these all angles in model. (B)http://googleweblight.com/i?u=http://www.peachpit.com/articles/article.aspx?p%3D2731939%26seqNum%3D2&grqid=30T3Fgd8&s=1&hl=en-IN
If it surely helps u ,please Marj it as brainliest, if only it helps u , otherwise it's OK.