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3 years ago

Does anyone know how to find a in this please ??

Mathematics

2 answers:

Airida [17]3 years ago

8 0

Answer:

Step-by-step explanation:

180 - 67 = 113

180 - 113 - 42 = 25

α = 25º

Len [333]3 years ago

3 0

ANSWER:
First we will take an angle 1) outside the small triangle so that it becomes in linear pair.
Then angle 1)=67 degrees.
Then we will do 180-67=113 degrees
Therefore the two angles in the triangle are 113 and 42 degrees
So third angle =180-113+42
=180-155
= 25 degrees
HOPE IT HELPS!!!!!!!
PLEASE MARK BRAINLIEST!!!!!!

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rjkz [21]

The other leg is 12cm long.

Step-by-step explanation:

Given,

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Other leg = b

As the triangle is right angled, therefore, using Pythagoras theorem;

$a^2+b^2=c^2\\(9)^2+b^2=(15)^2\\81+b^2=225\\b^2=225-81\\b^2=144\\$

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Keywords: triangle, square root

Learn more about triangles at:

#LearnwithBrainly

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