[" cosec "A" t sec "A" .cosec "B" t "5" ell "B" than "],[" pove that fan "A" toin "B=cot" ( "(n+B)/(2)" fe "]

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

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

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

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

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

If "cosec"A + secA="cosec"A+secB , prove that: tanA.tanB=cot(A+B)/(2)

If "cosec" 2A+ "cosec"2B+"cosec"2C=0 , prove that tan A+ tan B+ tan C+ cot A+ cot B+cot C=0

If " "a cos theta + b sin theta =c " and " b cosec theta - a sec theta = c, " prove that" cot 2 theta = (c^(2) + a^(2) - b^(2))/(2ab)

If x=a("cosec" theta + cot theta ) , y=b( " cosec " theta - cot theta ) , then

If sec A=17/8 and cosec B=5/4 , then sec(A+B) can have the value equal to -