All categories

2 years ago

Pls help 4 100 points in geometry i will giv brainliest

Mathematics

2 answers:

kipiarov [429]2 years ago

8 0

a=35°

Answer:

Solution given;

∡ZTN=85°

∡NTM=a

∡RTM=60°

∡ZTN+∡NTM+∡RTM=180°[since the sum of angle of a straight line is 180°]

substituting value

85°+a+60°=180°

a+145°=180°

a=180°-145°

a=35°

again

∡ZTN=∡TNM=85°[alternate angle]

Step-by-step explanation:

dmitriy555 [2]2 years ago

7 0

Answer:

a = 35

c = 85

Step-by-step explanation:

85 + 60 + a = 180 as they are all supplementary angles (together they form an angle of 180°)

therefore a = 35.

a + ( 180 -(a+85)) + c =180 (as the angles of a triangle add up to 180°. our triangle is NMT, the angles are a, c and 180°-(a+85°) for a theorem about lines secant to parallel lines)

therefore c = 85

You might be interested in

Help me plz ASAP<br> A.2<br> B.1/2<br> C.2/3<br> D.3/2

BARSIC [14]

Step-by-step explanation:

First and foremost, we can rule out B and C because they are less than one and would make the hexagon smaller instead of bigger. Now, when we measure the units, we see that it goes up by 2 squares on the graph. So, by process of elimination and measurement, we get the answer of A.

3 0

3 years ago

Find the exact value of tan (arcsin (two fifths)). For full credit, explain your reasoning.

Hitman42 [59]

$\bf sin^{-1}(some\ value)=\theta \impliedby \textit{this simply means}
\\\\\\
sin(\theta )=some\ value\qquad \textit{now, also bear in mind that}
\\\\\\
sin(\theta)=\cfrac{opposite}{hypotenuse}\qquad 
\qquad 
% tangent
tan(\theta)=\cfrac{opposite}{adjacent}\\\\
-------------------------------\\\\$

$\bf sin^{-1}\left( \frac{2}{5} \right)=\theta \impliedby \textit{this simply means that}
\\\\\\
sin(\theta )=\cfrac{2}{5}\cfrac{\leftarrow opposite}{\leftarrow hypotenuse}\qquad \textit{now let's find the adjacent side}
\\\\\\
\textit{using the pythagorean theorem}\\\\
c^2=a^2+b^2\implies \pm\sqrt{c^2-b^2}=a\qquad 
\begin{cases}
c=hypotenuse\\
a=adjacent\\
b=opposite\\
\end{cases}$

$\bf \pm \sqrt{5^2-2^2}=a\implies \pm\sqrt{21}=a
\\\\\\
\textit{we don't know if it's +/-, so we'll assume is the + one}\quad \sqrt{21}=a\\\\
-------------------------------\\\\
tan(\theta)=\cfrac{opposite}{adjacent}\qquad \qquad tan(\theta)=\cfrac{2}{\sqrt{21}}
\\\\\\
\textit{and now, let's rationalize the denominator}
\\\\\\
\cfrac{2}{\sqrt{21}}\cdot \cfrac{\sqrt{21}}{\sqrt{21}}\implies \cfrac{2\sqrt{21}}{(\sqrt{21})^2}\implies \cfrac{2\sqrt{21}}{21}
$

7 0

3 years ago

Is is 6 2/7 rational or irrational

steposvetlana [31]

Step-by-step explanation:

6 2/7is rational

-19is rational but next I dont know

6 0

3 years ago

List the years in order of increasing ring width

Snezhnost [94]

1920/1900/1910/1940/1930/

6 0

3 years ago

Please help me !!!!!!!!!!

Lera25 [3.4K]

on the left yes is square

no on the left is rectangle

yes on the right is square

all no on the rights can be triangle

Step-by-step explanation:

8 0

3 years ago