exam Maths Puzzle Numerical Ability

1 + cos 2x + sin 2x/1 + cos 2x + sin 2x = tan x

Can some one solve this please.

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exam Other Question

31.) (a+3i)+(2+bi)=i

33.) (5-the square root of -4)-(a+bi)=6

I know how to do the problems that do not have an equal to (ie =i or =6) but I do not understand how to do these. Please help please help me solve this equation 1)x2-100