please itx a request i need correct answers questions are very easy

Question 4 (a) Given a triangle with angles A, B and C and sides with length a, b and c. Angle C = 30, length of side c = 5.5 cm and length of side a = 4 cm, find the value of angle A. (b) A triangle has sides a = 2 and b = 3 and angle C' = 40. Find side c and the sine of angle B. Show your working. b B a C (c) Use the cosine rule to determine the side opposite to the known angle A. A Diagram Not accurately drawn 4.8cm 1230 6.4 cm B (d) In triangle ABC, side c - 42 cm, side a = 37 cm and side b = 26 cm. Calculate the value of angle A