Answer:
x-3=-3
Step-by-step explanation:
Answer:
60°
Step-by-step explanation:
There are a couple of ways to think about this.
a) If we rearrange the figure so both angle vertices are in the same place, then the marked angles would overlap. The amount of that overlap is ...
125° +115° -180° = 60°
That is, the smaller angle between the diagonal lines has a measure of 60°. The measure of i is 60°.
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b) If we extend the lower horizontal line to the left, as in the attached figure, we see that the external angle of the resulting triangle is an alternate interior angle that is congruent to the one marked 125°. The remote interior angles of the triangle with respect to that angle are "i" and (180° -115°) = 65°.
The exterior angle is the sum of the remote interior angles, so we have ...
125° = i + (180° -115°)
i = 125° +115° -180° = 60° . . . . as above
Lisa is incorrect,because more than one triangle can be be drawn with the given information.
Answer:
height of the building is 12.99 feet.
Step-by-step explanation:
given, try to analyse:
- ladder 15 feet long.
- 60 degree angle to the ground.
the height of the building is opposite to the angle 60° and given hypotenuse, the ladder of 15 feet long.
using sine rule:
Therefore the height of the building is 12.99 feet.