How to solve trigonometry Watch
The triangle is split and says 10 cm across the middle of the triangle and one of the split sides have a right angle and the angles are 66 degrees Celsius but the answer is m equals 11.9 cm but don’t get how they got to that bit please help
The triangle is exactly split in half as you see by the 90° angle.
That halved triangle would then have a 90° angle and a 33° angle at the top. Use that to substitute everything with the appropriate rule to work out m.