Using Trigonometry Learning Pages

1. Draw any right-angled triangle XYZ with Y a right-angle. Mark angle X, x°.
   Using this angle as the angle you are looking at, label up the sides of the triangle as adjacent, opposite and hypotenuse.
   If you have successfully done this, type 'yes'. π + − ÷ × < > ≤ ≥ π
2. Repeat a) but label Z, z° and using this angle as the angle you are looking at, label the sides of the triangle as for question 1.
   If you have successfully done this, type 'yes'. π + − ÷ × < > ≤ ≥ π

Your Turn!!

i) π + − ÷ × < > ≤ ≥ π
ii) π + − ÷ × < > ≤ ≥ π

1. Find angle x in the triangle above π + − ÷ × < > ≤ ≥ π °
2. Find the length AB above as an exact value π + − ÷ × < > ≤ ≥ π

From the diagram above, given that CD = 20 cm, AB = 5 cm, angle CAD = 90° and angle ABD = 70°, find:
1. AD to 3 significant figures π + − ÷ × < > ≤ ≥ π cm
2. Angle DCA to 3 significant figures π + − ÷ × < > ≤ ≥ π °