G279. ( 4:06 15 docs.google.com a Solve the question then choose the correct answer If y = csc-(seco) find y, then choose the correct answer a) 1 b) Csc o coto c) -1 d) - Csc coto a b do Solve the question then choose the correct answer 2-six-1 Find the value of lim 20 et-1 , then choose the correct answer: a) ex b) - In 2 c) - et d) In 2 b O O O O d Solve the question then choose the correct answer Find by using Chain Rule, then choose the correct answer: dt a) 1 b) -1 c) 2 d) o