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	If `(a+b) tan(theta-phi)=(a-b)tan(theta+phi)` and `a cos2phi+bcos2theta=c` , then prove that `a... (Doubtnut) View
	If `tantheta=a/b` ,then `bcos2theta+asin2theta` is equal to (a) `a` (b) `b` (c) `a/b` (d) `b/a` (Doubtnut) View
	lf `sintheta+sinphi =a` and `costheta + cosphi = b`, find the value of `tan((theta-phi)/2) ` (Doubtnut) View
	7. If tan`theta` = n tan`phi`, then maximum value of `tan^2 (theta-phi)` is equal to (Doubtnut) View
	If `0 ltalpha,beta ltpi` and `cosalpha+cosbeta-cos(alpha+beta)=3/2` then (Doubtnut) View
	Show that for all real `theta` the expression `asin^2theta+bsinthetacostheta+c cos^2theta` lies... (Doubtnut) View
	IIT JEE TRIGONOMETRIC FUNCTIONS If `x/( (Doubtnut) View
	If `A+B+C=pi` and `sin(A+C/2)=ksin(C/2)` then `tanA/2tanB/2` is (Doubtnut) View
	If `sintheta=3sin(theta+2alpha)`, then the value of `tan(theta+alpha)+2 tan alpha` is (Doubtnut) View
	If `sintheta=ksin(theta+phi)`, show that `tan(theta+phi)=(sinphi)/(cosphi-k)` (Doubtnut) View