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1. |
ABC is a triangle whose sides BC and CA are produced to D and E respectively. If \[{{100}^{o}},{{80}^{o}}\]\[{{144}^{o}},{{36}^{o}}\], then the value of \[\angle P=\angle R={{100}^{o}}\] is |
A. | \[\angle S={{75}^{o}}\] |
B. | \[\angle Q\] |
C. | \[{{50}^{o}}\] |
D. | \[{{85}^{o}}\] |
Answer» D. \[{{85}^{o}}\] | |