exam Maths Puzzle Numerical Ability

Please help me with this problem!
If:
z=4(cos50 degrees + i sin50 degrees) and w=2(cos340 degrees + i sin340 degrees), find z/w in polar form.

Thank you, natalie

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exam Other Question

The sum of two numbers is 38. Their difference is 12. What are the two numbers? I need some help
Express answer in simplist form:
8/s+8/s^2

and also
Simplify

x+2/x/ x-2/3x