ATPL theory questions

[Live your dream]

sqrt(1/cos30)=1.07 -->7%

or

VSold= i.e. 100kts
VSnew=VSold*sqrt(n); 100*sqrt(1.15)= 107kts --> increases 7%

The statement "an extra 15%" is not clear for me. During a 30º bank angle do you need an extra 15% of lift?, that would increase our load factor, or do you need an extra 15% of lift to execute that turn from straight and level flight?

If the answer is, you need an extra 15% whilst turning, then I think the answer is different.

The load factor would be 1.15+ 15% = 1.32; Vs=100*sqrt(1.32)= 114.89 --> 15%;