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2 years ago

Does anyone know the answer?

Mathematics

2 answers:

grigory [225]2 years ago

5 0

Answer:

12.7

Step-by-step explanation:

12.7

Basically u are gonna wanna use pythagoras first

BC = √(12^2 - 6^2) = √(144 - 36) = √(108) = 10.39230485

Also the Side Angle Side rule comes into play use the following

BC/sin(55) = CD/sin(90) <----- angle

BC/sin(55) = CD/sin(90)

sin(90)BC/sin(55) = CD

1*BC/sin(55) = CD

BC/sin(55) = CD

10.39230485/0.819152044 = CD

12.68666167 = CD

12.7 = CD

alisha [4.7K]2 years ago

3 0

BC=√+(12)^2-(6)^2))

=10.39

sin55=10.39/CD

CD=12.7

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