Math, asked by Adithi18, 1 year ago

Hey mate,
Here's your question.
Evaluate.

Attachments:

Answers

Answered by hrn21agmailcom

1

Answer:

cos 2@

Step-by-step explanation:

D = cos@ cos@ - (-sin@)(-sin@)

= cos^2@ - sin^2@

= cos 2@

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