If `sinA=-5/13` , `pi``<``A``<``(3pi)/2`and `cosB=3/5`, `(3pi)/2``<``B``<``2pi` find `sin(A+B)`

Find sin2x,cos2x,tan2x if secx=-13/5 , pi/2 < x < pi

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

Select and write the correct answer from the given alternatives in each of the following : If sinA=1/sqrt10,sinB=1/sqrt5 then A+B =……….

In /_\ABC , if a=13 , b=14 , c=15 then find the value of: sinA

If sintheta=12/13 0<(theta)<(pi/2)) and cosphi=-3/5 (pi<(phi)<(3pi)/2) then sin(theta + phi ) will be

If sintheta=(12)/(13),(0ltthetalt(pi)/(2))and cosphi=-(3)/(5),(piltphilt(3pi)/(2)) . Then , sin(theta+phi) will be................ A) (-56)/(61) B) (-56)/(65) C) (1)/(65) D) -56

If costheta=12/13 , 0 < theta < pi /2 , find the value of frac(1)(tan^2theta)

Express the following numbers in the form x+iy 7 ( cos ( - ( 5pi )/( 6)) + i sin ( - ( 5pi )/( 6)))