If m∠CDB = 60° and m∠DBC = 50°, then:m∠DBA = m∠DAB =

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03-11-2022
Mathematics

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If m∠CDB = 60° and m∠DBC = 50°, then:m∠DBA = m∠DAB =

Sagot :

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At the begining of 6 grade the ratio of number of the advanced math students to the number of regular students was 3:8. However after taking the placement tests

if arctan(3/5)=K Tan(k)=?

At the begining of 6 grade the ratio of number of the advanced math students to the number of regular students was 3:8. However after taking the placement tests

Here's a story problem...."Rita's wants to estimate the number of beans in a large jar. She takes out 100. she takes out 100 beans and marks them. Then she ret

YossiS627003 YossiS627003 · Answer 1 · 2022-11-03T20:29:15-04:00

Answer:

m∠DBA = 50 degrees

m∠DAB = 70 degrees

Explanation:

The given angles are highlighted in the diagram below:

The diagonal bisects the angle at each vertex, therefore:

[tex]m\angle\text{DBA}=50\degree[/tex]

In Triangle DAB

[tex]\begin{gathered} m\angle\text{DAB}+m\angle\text{ADB}+m\angle\text{DBA}=180\degree \\ m\angle\text{DAB}+60\degree+50\degree=180\degree \\ m\angle\text{DAB}+110\degree=180\degree \\ m\angle\text{DAB}=180\degree-110\degree \\ m\angle\text{DAB}=70\degree \end{gathered}[/tex]

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