09-10-2021
Mathematics

contestada

-8cot square A + 8 cosec square A

Respuesta :

jimrgrant1 jimrgrant1

09-10-2021

Answer:

8

Step-by-step explanation:

Using the identity

cosec²A = 1 + cot²A

- 8cot²A + 8cosec²A

= - 8cot²A + 8(1 + cot²A)

= - 8cot²A + 8 + 8cot²A

= 8

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