2 years ago

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

Mathematics

1 answer:

romanna [79]2 years ago

6 0

Answer:

tanA/2.

Step-by-step 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.

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