Question

If a b c are angles of a triangle prove that sin square A by 2 + sin square B by 2 + sin square C by 2 equals to 1 - 2 cos A by 2 cos B by 2 Sin C by 2


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Answer 1

Answer:

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Explanation:

you are giving sample of dilute hydrochloric acid and dilute sulfuric acid. which reagent will you use to differentiate between the two acid? mention the physical change associated with the test.

Answer 2

Answer:

If a b c are angles of a triangle prove that sin square A by 2 + sin square B by 2 + sin square C by 2 equals to 1 - 2 cos A by 2 cos B by 2 Sin C by 2

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