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

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

Find the value : (4/5)^3

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

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

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

If A lies in second quadrant and 3tanA+4=0, then the value of 2cotA-5cos A+sinA is equal to -53//10 (b) 23//10 37//10 (d) 7/10

If a/b=2/3 then find the values of expressions: (4a+3b)/3b

If cottheta=3/4 and pi

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