Quantrex Quantrex AcademyJEE · NEET · NDA PYQs with solutions Open app
AP EAMCET20226 Jul 2022Morning ShiftMathematicsProperties of TrianglesActual

In the triangle ABC , if a =7, ~b =6 and A =120^ , then the approximate value of B is

Options

  1. A47.9^
  2. B44.9^
  3. C59.9^
  4. D61.9^

Correct answer

A. 47.9^

Step-by-step solution

Given a =7, ~b = b and A =120^ . aligned & A a = B b & 120^ 7 = B 6 & (90+30^ ) 7 6= B & B= 6 7 30^ = 6 7 3 2 = 3 3 7 = 5.196 7 =0 aligned Required value is greater sthan to 45^ but less then to 60^ .

Practice Properties of Triangles on Quantrex Academy →

More from Properties of Triangles

In A B C , if A, B, C are in arithmetic progression then a ^2- ac + c ^2 ( ~A - C 2 )= 2025If in A B C, B=45^ , a=2( 3 +1) and area of A B C is 6+2 3 sq.units, then the side b = 2025In triangle A B C , if C=120^ , c= 19 and b=3 , then a= 2025In a A B C, 2 A+C=300^ . If the circumradius of the A B C is eight times its inradius then C 2 = 2025In A B C , if a=5, b=4 and (A-B)= 31 32 , then c= 2025In a triangle ABC, if A =30^ and b ( 3 +1)^2+2( 2 -1) = c ( 3 +1)^2-2( 2 -1) , then B= 2025In ABC if the line joining the circumcentre and the incentre is parallel to BC, then B + C = 2025In a triangle ABC, if r ₁: r ₂=3: 4 and r ₂: r ₃=2: 3 , then a : b : c = 2025 Full Properties of Triangles list All AP EAMCET PYQs