book Maths Puzzle Numerical Ability

1+2 sinө + sin2ө= (1+sinө)2/ Cos2ө

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book Other Question

A number t increased by the sum of seven and the square of another number s is ten

How can i write this question so that it reads as an equation?
solve using the calculator.

3x+2y=3
y=(3/2)x-(1/2)

(3/2)and(1/2) are shown as fractions out of paranthesis on my paper.