please help me these math questions

Calculus
Tutor: None Selected Time limit: 1 Day

May 11th, 2015

To find side a we have to use the The Law of Cosines

a^2 = b^2 + c^2− 2bc cosA

a^2 = 16 + 64 - 2*4*8 cos 48

a = 6.1


Now we use the The Law of Sines to find the smaller of the other two angles.

sin B / b = sin A / a

sin B / 4  = sin 48 / 6.1

sin B = 0.487308082280



I am finishing the question, need few more minutes

May 11th, 2015

B = 29 degrees

To find angle C is easy knowing that angles of a triangle add to 180 degrees

C = 180 -29+48 = 103 degrees

May 11th, 2015

Let me know if you have any questions

May 11th, 2015

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