Sinx=cosy hole cosec(x+y)er man kata?

suppose sinx=1/5, cosy=2/3, and x and y are in the first quadrant. determine sin (x+y)

sinx+ siny/ (cosx+cosy)= tan 1/2 (x+y) prove this identity

secx/sinx-sinx/cosx=cotx

If sinx=3/5,cosy=-12/13,where x and y both lie in 2nd quad.Find the value os sin(x+y).

if sinx=3/5,cosy=12/13,where x and y both lie in 2nd quadrant, find the value of sin(x+y),cos(x-y),t...

given that sinx=3/4 and cosy=-5/13 and both x and y are in quadrant II, find the exact value of cos(...

Limx-0 sinx/tanxsecx+tanx.sinx

How do I get (sinx cosy + cosx siny) (cosx cosy + sinx siny) in the form of 1/2(sin2x + sin2y)?

cosx+cosy=a and sinx+siny=b show that sin2x+sin2y=2ab(1-(2/(a^2+b^2)) plz plz show step

ifcosX+cosY=a and sinX+sinY=b than prove thatsin2X+sin2Y=2ab(1-2/(a^2+b^2)

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