✨ Best Answer ✨
cosC=(a^2+b^2-c^2)/2ab
=(4+2√3+4-6)/2×2×(1+√3)
=(2+2√3)/(4+4√3)=2(1+√3)/4(1+√3)
=1/2
よって、C=60°
Answers
Answers
Were you able to resolve your confusion?
Users viewing this question
are also looking at these questions 😉
✨ Best Answer ✨
cosC=(a^2+b^2-c^2)/2ab
=(4+2√3+4-6)/2×2×(1+√3)
=(2+2√3)/(4+4√3)=2(1+√3)/4(1+√3)
=1/2
よって、C=60°
Users viewing this question
are also looking at these questions 😉
