Step-by-step explanation:
13.) option d. side side angel ( as it has 2 sides and 1 angle )
14. ) cosine
16 ) formula of law of cosine
c = √a² + b² - 2ab • cos c
c = √31² + 35² - 2 • 31 • 35 • cos (48°)
c = 27.09
hope this answer helps you dear
