सिद्ध कीजिए की:
` cot A - tan A =2 cot 2A `

tan A + cot 2A=

tan A-cot A=-2cot2A

tan A + cot A = 2 cosec 2A

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

Prove that tan A - cot A =-2 cot2A

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

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

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

Show that (cot A + tan B) / (cot B + tan A) = cot A. tan B.

tan A cot (A//2)-1=