3 years ago

Fill in the missing reason in proof.

Mathematics

1 answer:

KiRa [710]3 years ago

8 0

Answer:

Step-by-step explanation:

As per steps given the congruent pairs are:

AB and AC
BD and CD
Angle B and angle C

So two sides and included angle - it represents side-angle-side or SAS congruency theorem

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Given

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See attachment

Required

Explain and correct the error

The error in the equation is that: the formula of cosine of angle A is used to calculate the sine of angle A.

The ratio can be corrected as by using:

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