exam Maths Puzzle Numerical Ability

Please help!
If we establish an identity:
(tan A - cot A)/(tan A + cot A) would equal what?

Thank you, Tami

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exam Other Question

solve the inequality:

7q-1+2q<29 I need to find a pair of integer for a and b that satisfies this equation:

5(2a+1)-4(a-2)=b(a+4)+16

I tried to solve the equation, but came up with a=4b+3/-b+6. I was unabl