Question

(a)whats is the value of x


(b) what is the measure of angle B

Answer 1

`cdb = 8 \\ x = 4 \\ by \: pythagoras \: theorem \\ 8 {}^(2) = 4 {}^(2) + x{}^(2) \\ 64 = 16 + x {}^(2) \\ 64 - 16 = x {}^(2) \\ 48 = x{}^(2) \\ √(48 ) = x\\ angle \: b = 60 \\ angle \: of \: equilateral \: triangle \: equal \: 60`