Question

What is the value of BC Please help I’ll give you BRAINLIEST

Answer 1

Answer:

1.5

Step-by-step explanation:

use pythagoras theorem

c^2=a^2+b^2

2^2=a^2+1^2

4=a^2+ 1

4-1 =a^2

3 =a^2

a= 1.7

but on the answers provided there is no correct answer bt chose 1,5 because it is close to 1,7 than the rest of the a answers provided

Answer 2

Use alkashi’s law of cosine
a^2 = 1^2 + 2^2 - 1*2*cos(25deg)
a = 1.8(2sf)
But there is no 1.8 as an option, kinda weird