If, in triangle , , , and are given and , then and are the two possible values of…

MATHEMATICS · Multi correct · GCSE · Mathematics · Geometry and Measures · Geometry and Measures

Problem

If, in triangle

ABC

a

c

, and

\angle A

are given and

c\sin A<a<c

, then

b_1

and

b_2

are the two possible values of

b

. (1)

b_1+b_2=2c\cos A

(2)

b_1+b_2=c\cos A

(3)

b_1b_2=c^2-a^2

(4)

b_1b_2=c^2+a^2