If `(cosA)/3=(cos B)/4 =1/5` `-pi/2lt Alt0` `-pi/2ltblt0` then value of 2sinA +4 sin B is

The value of 2sinA cos^(3)A -2sin^(3)A cosA is

If cos A=4/(5), cosB=12/13 and (3pi)/2 < A, B < 2pi then find the value of cos(A+B)

If sin x = 1/4 , pi/2 lt x lt pi , find the values of cos\ x/2 and tan\ x/2 .

If cosA=-3/5 and pi/2 lt A lt pi , find the values of the following: i) sin2A , ii) cos2A , iii) tan2A

If sin A=3/5 and cos B = 9/41, 0 lt A lt pi/2 and 0 lt B lt pi/2 . Find the values of that : sin (A+B)

If sinA = 3/5 and 0^@ lt A lt 90^@ , find the value of sin 2A, cos 2A, tan 2A, and sin 4A .

If sinA=-4/5 and pi lt A lt (3pi)/2 , find the value of (cosecA+cotA)/(secA-tanA)

If cosA=-sqrt(3)/2, sinB=-5/13 , where pi/2 lt A lt pi, (3pi)/(2) lt B lt 2pi , find the value of tan(A-B) .

If sinA=3/5 and cosB=9/41, 0 < A < pi/2 and 0 < B < pi/2 then find the values of (i) sin(A+B) (ii) sin(A-B) (iii) cos(A+B) (iv) cos(A-B)

If sinA=3/5 , where 0^0ltAlt90^0 , then find the values of sin2A , cos2A ,tan2A and sin4A