Question

2 Sine rule for a triangle states that:
A. a/sin A = b/sin B = c/sin C
B. sin A/a = sin B/b = sin C/C
C. a/sin A+ b/sin B + c/sin C
D. 2a/sin A = 2b/sin B = 2c/sin C.
3 Cosine Rule is also known as:
A. Sine triangle
B. Cosine Formula
C. Cosine Triangle
D. Cosine Area.​

Answer 1

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Sine rule :-

In a ∆ ABC ,

$\sf \leadsto \dfrac{a}{sinA}=\dfrac{b}{sinB}=\dfrac{c}{sinC}$

Cosine rule :-

It is also known as Cosine formula