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

5 answers

STOP SHOUTING!

Use the law of cosines to get
YZ^2 = 6^2 + 6^2 - 2*6*6*cos100°

Or,
Angles Y and Z are both (180-100)/2 = 40°
Now use the law of sines to get
YZ/sin100° = 6/sin40°
Draw an isoceles triangle
maths
XYZ is an isosceles triangle.[XY]=[XZ]=6cm and YXZ(angle is on X)=100 degrees. Calculate line [YZ] correct to 2 s.f.
Im confused asf
It's was really hard but i think av got it all thanks to you all