" (vi) "cot A-tan A=2cot2A

If 2A is not an integral multiple of pi , then show that i) cot A+tan A=2"cosec " 2A ii) cot A-tan A=2 cot2A and deduce the values of tan52 1^(@)/2 and tan37 1^(@)/2

If A is not an integral multiple of (pi)/(2) , prove that (i) tan A + cot A= 2 cosec 2 A (ii) cot A - tan A = 2cot 2A

tan A-cot A=-2cot2A

(sin 3A -cos ((pi)/(2)-A))/(cos A+ cos (pi+3A))= ................. A) tan A B) cot A C) tan 2A D) cot 2A

tanA+cot(180^0+A)+cot(90^0+A)+cot(360^0-A)= ............... A) 0 B) 2 tan A C) 2 cot A D) 2(tan A-cot A)

Prove that (1)/(tan3A-tan a)-(1)/(cot3A-cot A)=cot2A

Show that: (1)/(tan3A-tan A)-(1)/(cot3A-cot A)=cot2A

Prove that (1)/(tan 3A - tan A) - (1)/(cot 3A - cot A) = cot 2A .

Prove that : (cot A + tan B)/ (cot B + tan A) = cot A tan B

(cot A+tan B)/(cot B+tan A)=cot A tan B