Question

in triangle abc, sin A=0.3, sin B 0.7 and B=20 cm calculate a

Answer 1

When given a triangle with a given side of length b = 20 cm and opposite angles given as sin A = 0.3, sin B = 0.7, then we can use sine rule to find the missing side ''a''.



a = 8.57 cm

• In mathematics, sine rule used to find sides and angles of a triangle is given by the formula;

a/sin A = b/sin B = c/sin C

• We are given;

sin A = 0.3

sin B = 0.7

b = 20 cm

• We want to find a, thus;

a/sin A = b/sin B

Plugging in the relevant values;

a/0.3 = 20/0.7

a = 20 × 0.3/0.7

a = 8.57 cm

Read more at; brainly.com/question/12751192