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Helpp!!! prove that: cosecA-cotA= tanA/2
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22 votes
Helpp!!!
prove that:
cosecA-cotA= tanA/2

User Jaison
by
5.3k points

1 Answer

5 votes

Answer:

tanA/2.

Explanation:

some trigonometric properties:

* tanA = sinA/cosA

* secA = 1/cosA

* cscA = 1/sinA

* cotA = cosA/sinA

1/sinA - cotA

1/sinA - cosA/sinA

1 - cosA / sinA

.... 1 - cosR / sinR = tan(R/2)

1 - cosA / sinA

= tanA/2.

User Dgellow
by
4.6k points
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