In any `DeltaABC,` find `sin A+sin B+ sin C.`

In DeltaABC,if cos A+ sin A -(2)/(cos B + sin B) =0, then (a+b)/c is equal to

In a DeltaABC,3 sin A+4 cos B=6 and 3 cos A+4 sinB=1 , then angleC can be

sin 2 ………… sin 5

In a Delta ABC , angles A, B, C are in AP. If f(x) = lim_(A to C) (sqrt(3 - 4 sin A sin C))/(|A-C|) , then f'(x) is equal to ..........

In a triangle ABC, sin A- cos B = Cos C , then angle B is

If A + B + C = 180^@ , then prove that sin 2 A+ sin 2B + sin 2C = 4 sin A sin B sin C

If in DeltaABC, angle A=90^(@) and c, sin B cos B are rational numbers, then show a and b are rational .

Is it right to say that sin (A+B) =sin A +sin B ? Justify your answer.

In DeltaABC,(sinA)/(sinC)=(sin(A-B))/(sin(B-C)) then prove that a^(2),b^(2),c^(2) are in A.P.

Using vector, Prove that for DeltaABC , (a)/(sinA)=(b)/(sinB)=( c )/(sin C) .