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AP EAPCET 20-Aug-2021 Shift 1 Paper

Section: Mathematics

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Question : 5

Total: 160

If A, B, C are the angles of a triangle then the system of equations −x+y‌cos‌C+z‌cos‌B=0, x‌cos‌C−y+z‌cos‌A=0, x‌cos‌B+y‌cos‌A−z=0

only zero solution
a non-zero solution for all triangles Δ‌ABC
only zero solution but for certain values of A,B,C
a non-zero solution if Δ‌ABC is an equilateral triangle & not for all triangles

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