Tangent Subtraction Formula

So I spoke about this question in the last post if you want to check that out before giving this a try!

(a) (i) established the tan (A-B) formula…and that was the hint that it was to be used in (a) (ii) here.

Will post the solution in a bit if anyone wants to give it a go.

Hint: Let A=45 and B=30.

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