Mathematics, 04.09.2019 05:10 ijohnh14
From the foot of a building i have to look upwards at an angle of 22 degrees to sight the top of a tree. from the top of a building, 150 meters above ground level, i have to look down at an angle of depression of 50 degrees to look at the top of the tree. a) how tall is the tree? b) how far from the building is the tree?
Answers: 2
Mathematics, 21.06.2019 20:00
How many sides does a regular polygon have if each exterior angle measure is 45 degrees explain your answer, i really don't understand this.
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Mathematics, 22.06.2019 02:00
During how many months was the difference between the number of days with homework and with no homework greater than 6?
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Mathematics, 22.06.2019 02:40
Exercise: counting committees 0.0/2.0 puntos (calificable) we start with a pool of n people. a chaired committee consists of k≥1 members, out of whom one member is designated as the chairperson. the expression k(nk) can be interpreted as the number of possible chaired committees with k members. this is because we have (nk) choices for the k members, and once the members are chosen, there are then k choices for the chairperson. thus, c=∑k=1nk(nk) is the total number of possible chaired committees of any size. find the value of c (as a function of n ) by thinking about a different way of forming a chaired committee: first choose the chairperson, then choose the other members of the committee. the answer is of the form c=(α+nβ)2γn+δ. what are the values of α , β , γ , and δ ?
Answers: 3
From the foot of a building i have to look upwards at an angle of 22 degrees to sight the top of a t...
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