If `sinA/3=sinB/4=1/5`and A,B are angles in the second quadrant then prove that `4cosA+3cosB=-5`

If sinA/3=sinB/4=1/5 and A,B are angles in the second quadrant,find the value of 4cosA+3cosB

If sintheta=3/5 and theta is in the second quadrant,find : cos(theta/2)

If sintheta=3/5 and theta ìs in the second quadrant, find : sin(theta/2)

If sin theta =(24)/(25) and theta lies in the second quadrant, then sec theta + tan theta= ............ (A) -3 (B) -5 (C) -7 (D) -9

A(-5,-3) and B(6,-8) are in which quadrants?

If sin theta =-4/5 and theta lies in third quadrant, then the value of cos (theta/2) is ............... A) (1)/(sqrt5) B) -(1)/(sqrt5) C) sqrt((2)/(5)) D) -sqrt((2)/(5))

If 4sinA=4sinB=3sinC" in a "DeltaABC , then cos C =

If A lies in the third quadrant and 3 tan A- 4 =0, then 5sin2A + 3 sinA + 4cosA=

If tanA=5/6,tanB=1/11 prove that A+B=pi/4