Question

In a triangle the length of the side ab is 3 cm and bc is 5 cm.What is the length of ac, if the angle formed at b is 60 degree

Answer 1

Answer:

4.35

Step-by-step explanation:

according to cosine rule,

a2=b2+c2-2bc cos A

therefore,

a2=9+25-30xcos 60

   =4.35

Answer 2

Answer:

so u can find the value like above also ....hope this helps