Question

in a triangle ABC , angle A = 120° , if AD bisect angle A , then prove that AD = AB.AC / AB+ AC​

Answer 1

Answer:

Given: parllelogram ABCD circumscribe a circle.

To prove: we know that pain syndrome from the extent part are equal in length.

AP=AS-------1

BP=BQ-------2

CR=CQ-------3

DR=DS-------4

Adding 1,2,3 and 4

AP+BP+CR+DR=AS+BQ+CQ+DS

AB+CD=AD+BC-------5

ABCD is a parllelogram

AB=CD

----------6

AD=BC

From 3 and 6 we get

AB+AB=AD+AD

2AB=2AD

AB=AD

If adjacent sides of parllelogram are equal then it becomes rhombus.

Hence ABCD is a Rhombus.

Answer 2

Answer:

Science is the pursuit and application of knowledge and understanding of the natural and social world following a systematic methodology based on evidence. Scientific methodology includes the following: ... Evidence. Experiment and/or observation as benchmarks for testing hypotheses.

Step-by-step explanation:

hope it's helpful,,

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