In ABC - cosec A sin B cos C -cos B sin C -A- c-aB- a-cC- 1D- c-ab

The correct option is C 1( b/a cos C + c/acos B ) = 1; (by projection rule). ...

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Projection Formula

In ABC , cose...

Question

In $△$ ABC, cosec A(sin B cos C + cos B sin C) =

c/a

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a/c

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c/ab

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In triangle ABC, if AB = AC, then which of the following is correct?

∣ ∣ ∣ ∣ \begin{matrix} a - b & b - c & c - a b - c & c - a & a - b c - a & a - b & b - c \end{matrix} ∣ ∣ ∣ ∣

∣ ∣ ∣ ∣ \begin{matrix} a + b & b + c & c + a b + c & c + a & a + b c + a & a + b & b + c \end{matrix} ∣ ∣ ∣ ∣ = K ∣ ∣ ∣ ∣ \begin{matrix} a & b & c b & c & a c & a & b \end{matrix} ∣ ∣ ∣ ∣

K =

∠ B =

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