Question

XYZ IS AN ISOSCELES TRIANGLE \XY/=\XZ/=6CM AND YXZ=100 CALCULATE \YZ/ CORRECT TO 2s.f

Answer 1

use the law of cosines
YZ^² = 6^² + 6^² - 2*6*6*cos100°

AND STOP SHOUTING!

Answer 2

9.2