10sinB+5 = sinB+5

SinA + sinB/sinA - sinB= tanA+B/2cotA-B/2

IF (1/SinA)+(1/cosA)= (1/sinB)+(1/cosB) Prove that cot((A+B)/2)=tanA tanB Please helppppppppppp

12. IF 1/SinA+1/CosA=1/SinB+1/CosB ,PROVE THAT: Cot{(A+B)/2}=TanA.TanB

If sin a + sinb + sinc = 4cosa/2cosb/2cosc/2 Then sin 2a + sin2b + sin 2c = 4cosacosbcosc

a+b+c=180,show that sina+sinb+sinc=4cosa/2cosb/2cosc/2

If cos cos A=3/5 and sinB=7/25,where A is acute and B is obtuse,find without using tables the value...

Given that cosA=4/5 and sinB=15/17 where A and B are acute angles,find the value of cos(A-B)

A+B=90 then sina sinb=

If 3 sinb + 5 cosb =5 then show that 3 cosb - 5 sinb =±3

sinA.sin(B – C) + sinB.sin(C – A) + sinC.sin(A – B) = 0

Question