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Qn #1415
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If $a+b+c=\pi$ , then the value of $\begin{vmatrix} sin(A+B+C) &sinB &cosC \\ -sinB & 0 &tanA \\ cos(A+B)&-tanA &0 \end{vmatrix}$ is
A.
0
B.
1
C.
$$2 sinA \ sinB$$
D.
2
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❓ Question: If $a+b+c=\pi$ , then the value of $\begin{vmatrix... | TANCET Group Studies | Tancet Group Studies