Question

solve triangle BCD. I don't understand how to solve this problem seeing how only one side is labeled. Please help!

Answer 1

whts m<D ???

Answer 2

I dont know yet I have to figure that out too :/

Answer 3

see sum of all angles of a triangle = 180
u got values of two angles...so find the value of third angle

Answer 4

oooh okay so D is 69 degrees

Answer 5

yup...... :))and lol only two options mention tht value.. :P

Answer 6

A and C, hmm but I need to find sides BC and CD

Answer 7

remember sin x = opposite/hypotenuse

Answer 8

Would I plug 69 into sin?

Answer 9

as u wish.....like u can also do
cos(21) = BC/18

Answer 10

my calculator said there was an error :o I don't know what BC is so I plugged in x over 18

Answer 11

18 cos(21) = BC
cos(21) = 0.9335.................

Answer 12

creepy value -_-

Answer 13

thank you! and i know right?? haha