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Arisa [49]
2 years ago
11

(a)whats is the value of x (b) what is the measure of angle B

Mathematics
1 answer:
natulia [17]2 years ago
3 0

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

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