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cindyramirez3140
14.01.2022 •
Mathematics
In a triangle, measure of one angle is 60º. The measure of one of the remaining two angles is twice the other. Find the measure of the smallest angle of the triangle.
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Ответ:
with one angle is 60 the sum of the remains two angles is 120
let the smallest angle be x
as the larger angle is twice of the smaller angle, it will be 2x
therefore, x+2x = 120, x= 40
so the smallest angel of the triangle is 40 degree
Ответ:
Step-by-step explanation:
Partial fraction:
Given integration is
(x²-4)= (x+2)(x-2)
Let
Therefore,
A+B=0 ⇒2A+2B=0...(1) and 2B-2A=1.....(2)
Adding (1) and (2)
2A+2B+2B-2A=0+1
⇒4B=1
Putting the value of B in equation (1) we get
Therefore,
Trigonometric substitution:
Given integration is
Let x = 2 sinθ
⇒dx = 2 cosθ dθ
let
,![f'(\theta)= (sec^2\theta+sec\theta tan\theta)d\theta](/tpl/images/0561/2652/a40d1.png)
Since![x= 2 sin \theta](/tpl/images/0561/2652/45bcd.png)
Putting the value of secθ and tanθ