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Question-174963




Question Number 174963 by MikeH last updated on 14/Aug/22
Commented by thfchristopher last updated on 15/Aug/22
But there is no such option for 7.31...
Butthereisnosuchoptionfor7.31
Answered by a.lgnaoui last updated on 15/Aug/22
7,31
7,31
Answered by behi834171 last updated on 15/Aug/22
XY=b  ⇒XZ^2 =XY^2 +YZ^2 −2XY.YZ.cosY^�   ⇒5^2 =b^2 +b^2 −2b^2 cos40⇒  ⇒b^2 =((25)/(2(1−cos40)))⇒    b=7.31  .■
XY=bXZ2=XY2+YZ22XY.YZ.cosY52=b2+b22b2cos40b2=252(1cos40)b=7.31.◼
Commented by MikeH last updated on 15/Aug/22
thank you sir. I solved that and I was shock   that I was wrong
thankyousir.IsolvedthatandIwasshockthatIwaswrong
Answered by mr W last updated on 15/Aug/22
XY=(5/(2 sin ((40°)/2)))≈7.31
XY=52sin40°27.31

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