Cho hình vẽ sau, biết \(a//b\) và \(\widehat{{{A}_{1}}}={{100}^{0}}\). Tính \(\widehat{{{B}_{1}}},\widehat{{{B}_{2}}}\).
A.\(\widehat{{{B}_{1}}}=\widehat{{{B}_{2}}}={{100}^{0}}\)
B. \(\widehat{{{B}_{1}}}={{100}^{0}},\,\,\widehat{{{B}_{2}}}={{80}^{0}}\)
C. \(\widehat{{{B}_{1}}}={{80}^{0}},\,\,\widehat{{{B}_{2}}}={{100}^{0}}\)
D. \(\widehat{{{B}_{1}}}={{100}^{0}},\,\,\widehat{{{B}_{2}}}={{90}^{0}}\)
A.\(\widehat{{{B}_{1}}}=\widehat{{{B}_{2}}}={{100}^{0}}\)
B. \(\widehat{{{B}_{1}}}={{100}^{0}},\,\,\widehat{{{B}_{2}}}={{80}^{0}}\)
C. \(\widehat{{{B}_{1}}}={{80}^{0}},\,\,\widehat{{{B}_{2}}}={{100}^{0}}\)
D. \(\widehat{{{B}_{1}}}={{100}^{0}},\,\,\widehat{{{B}_{2}}}={{90}^{0}}\)
Loga
Hóa Học lớp 12
