`sin^4phi=3/8+1/8cos4phi-1/2cos2phi`

Find int( (3 sin phi-2) cosphi)/(5-cos ^2 phi-4 sin phi) d phi

int(2sin2 phi-cos phi)/(6-cos^(2)phi-4sin phi)d phi

If (sin^2 phi+3sin phi+2)/(cos^2 phi)=1 , where -90^@< phi <90^@ , then what is the value of (cos 2 phi+sin3 phi+cosec2 phi) ?

If sin 2theta+sin 2phi=1//2 and cos2theta+cos 2phi=3//2 , then cos^(2)(theta-phi)=

If sin 2theta+sin 2phi=1//2 and cos2theta+cos 2phi=3//2 , then cos^(2)(theta-phi)=

If sin 2theta+sin 2phi=1//2 and cos2theta+cos 2phi=3//2 , then cos^(2)(theta-phi)=

If sim 2theta+sin2phi=1/2 and cos 2theta+cos2phi=3/2 then cos^2(theta-phi)=