Math, asked by adityaroy7005, 10 months ago

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Answered by Sreesha

1

Answer:

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#answerwithquality #bal

Step-by-step explanation:

13. cot(90-Ф) = tanФ

sec²Ф - tan²Ф = 1

14. sin²Ф + cos² Ф = 1

= cosec²Ф - cot²Ф

16. secФ = cosec (90-Ф) and sinФ = cos (90-Ф)

The answers reduces to 1.

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