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Aloiza [94]
3 years ago
7

ABCD IS A TRAPEZIUM WORK OUT THE SIZE OF ANGLE CDA.

Mathematics
1 answer:
zvonat [6]3 years ago
7 0

Answer:

The measure of angle CDA is 27.6\°

Step-by-step explanation:

see the attached figure to better understand the problem

we know that

In the right triangle ABF

Applying Pythagoras Theorem

A.F^{2}=6.5^{2}-6^{2}

A.F^{2}=6.25

A.F=2.5\ cm

In the right triangle CED

CE=6\ cm

ED=23-(9+2.5)=11.5\ cm

so

tan(

substitute the values

tan(

(

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