SATHEE: Triangles-And-Properties-Of-Triangle Question 74

Triangles-And-Properties-Of-Triangle Question 74

Question: In any $ \Delta ABC $ , find value of $ ( \frac{b-c}{a} ){{\cos }^{2}}( \frac{A}{2} ) $ $ +( \frac{c-a}{b} ){{\cos }^{2}}( \frac{B}{2} )+( \frac{a-b}{2} ){{\cos }^{2}}( \frac{C}{2} ). $

Solution:

Answer: 0.00

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Triangles-And-Properties-Of-Triangle Question 74

Question: In any $ \Delta ABC $ , find value of $ ( \frac{b-c}{a} ){{\cos }^{2}}( \frac{A}{2} ) $ $ +( \frac{c-a}{b} ){{\cos }^{2}}( \frac{B}{2} )+( \frac{a-b}{2} ){{\cos }^{2}}( \frac{C}{2} ). $

Solution:

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