exam Maths Puzzle Numerical Ability

How do you solve for theta(in degrees) in a formula without points?

Ex: tan (theta)=1.1111
theta = ?

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exam Other Question

LET f(x)=x3-8x2+17x-9. USE THE FACTOR THEOREM TO FIND OTHER SOLUTIONS TO f(x)-f(1)=0,BESIDES x=1. The temperature in degrees Fahrenheit,F, is the sum of 9/5 the temperature in degrees Celsius, C, and the constant 32. Which equation best represents this relationship?
A. F= 9/5C + 32
B. F= 9/5(C+32)
C. F= 9/5 + C + 32
D. F= 9/5(C-32)