SOLUTION: Find all unknown sides and angles of triangle PQR if ANGLE P is 42 and PQ:21 cm and QR:17.3 cm?

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Question 752165: Find all unknown sides and angles of triangle PQR if ANGLE P is 42 and PQ:21 cm and QR:17.3 cm?
Answer by kibauu(44) About Me  (Show Source):
You can put this solution on YOUR website!
you can use sinus formula
a%2FsinA+=+b%2FsinB+=+c%2FsinC
let a=21, b=17,3 and 21%2Fsin+A+=+17.3%2Fsin+42
after you find out sin A, calculate the other angle or we call it you could find the unknown sides too with sinus formula