The questions below refer to the chapel (see above) which has a symmetrical roof

The questions below refer to the chapel (see above) which has a symmetrical roof and spiral.
The questions below refer to the chapel (see above) which has a symmetrical roof and spiral. The top of the spiral (point D) is 16 units above the ground.1. Work out the vectors AB BC and CA and in calculate the modulus for each (2 decimal places).
Find the direction cosines of AB and thus calculate the angle in degrees (1 decimal place) between AB and each of the positive coordinate axes.
2. Using vector methodology find all of the angles (in degrees) in the triangle ABC correct to 2 decimal places. 3. Obtain the outward unit normal vector to each of the sloping spiral roofs BDE DEJ CHKG and CGLM. The questions below refer to the chapel (see above) which has a symmetrical roof and spiral. The top of the spiral (point D) is 16 units above the ground.1. Work out the vectors AB BC and CA and in calculate the modulus for each (2 decimal places).
Find the direction cosines of AB and thus calculate the angle in degrees (1 decimal place) between AB and each of the positive coordinate axes.
2. Using vector methodology find all of the angles (in degrees) in the triangle ABC correct to 2 decimal places. 3. Obtain the outward unit normal vector to each of the sloping spiral roofs BDE DEJ CHKG and CGLM.
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