In the given figure (not drawn to scale), UT || SR and TR || SV, then find ∠a and ∠b.
A
a=115o,b=40o
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B
a=120o,b=65o
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C
a=145o,b=55o
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D
a=105o,b=35o
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Solution
The correct option is Aa=115o,b=40o In the given figure UT || SR and TR || SV, Then ∠ UTR=∠ PRQ=90 0 In triangle PQR ∠ RPQ+∠ RQP+∠ PRQ=1800 Then ∠ RQP(b)=180-90-50=400 TR||SV THen ∠ a=∠ RTU+VUVS=90+25=1150