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Question : 64 of 75
Marks:
+1,
-0
Solution:
Angle bisector can be
=λ(+)‌ or ‌=u(−) =λ(‌+‌) ‌‌=‌(3+3+−+4) ‌‌=‌(4+2+4).........(i) ‌ also, ‌=α+2+β.........‌ (ii) ‌ On comparing eq (1) and eq(2)
‌=1 ⇒λ=3√2 putting value of
λ in eq(i)
=4+2+4 ‌ Now, ‌=u(‌−‌) =‌(3+3−+−4) =‌(2+4−4) =‌(+2−2)....................(iii) ‌ on comparing eq(ii) and eq(iii) ‌ ‌=1⇒u=‌ ‌ putting value of ‌u‌ in eq(iii) ‌ =+2−2 ⋅=−2 ∴⋅+2=0
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