In triangle ABC, angle BAC = 72 degrees. The incircle of triangle ABC touches sides BC, AC, and AB at D, E, and F, respectively.
Find angle EDF, in degrees.
2 answers:
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Answer:
a) 910
b) 828100
c) 144320
Step-by-step explanation:
a. ∑y
This is the sum of all values of y. So
b. (∑y)^2
This is the square of the sum, so the square of 910, that we found in the previous item.
910² = 828100
c. ∑y^2
This is the sum of the squares of each amount spent. So