# How to solve trigonometryWatch

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#1
It says find the missing length m to 3 S.f.
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
0
#2
This one here
0
4 weeks ago
#3
you know that SOHCAHTOA rule:

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.
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4 weeks ago
#4
and there is a vertical 10cm
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#5
Thank you so much I worked it out now by what you told me
1
4 weeks ago
#6
👏👏👏
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