Find QR.

Write your answer as an integer or as a decimal rounded to the nearest tenth.

QR = ___​


Find QRWrite Your Answer As An Integer Or As A Decimal Rounded To The Nearest Tenth QR class=

Answer :

Answer:

Step-by-step explanation:

take 64 degree as reference angle

using cos rule

cos 64=adjacent/hypotemuse

0.43=QR/10

10*0.43=QR

4.3=QR