" (f) "cosec A+sec A=cosec B+sec B

If "cosec"A + secA = "cosec"B + sec B prove that "tan"(A+B)/2 = cot A cot B

If csc A+sec A=csc B+sec B, prove that: tan A tan B=cot(A+B)/(2)

If sec A - "cosec" A= "cosec" B - secB, "show that" tanA tan B = "tan"(A+B)/2

Prove that : (sec A - tan A)/ (cosec A + cot A) = (cosec A - cot A)/ (sec A + tan A)

(d)/(dx)(log tan((pi)/(4)+(x)/(2)))= (a) cosec x (b) -cosec x (c) sec x (d) -sec x

If three vectors (sec^(2)A) hati+hatj+hatk , hati+(sec^(2)B)hatj+hatk,hati+hatj+sec^(2)hatk are complnar, then the value of cosec^(2)A + cosec^(2)B+ cosec^(2)C is -

Prove that : (sin A + cos A) (sec A + cosec A) = 2 + sec A cosec A

Prove that : (sin A - cos A) (1 + tan A + cot A) = (sec A)/ (cosec^(2) A) - (cosec A)/ (sec^(2) A)

sec theta=cosec theta

cosec 23^@ - sec 67^@