Question

please solve it... correct answer will be marked as brainliest ... and his or her account will be followed promise​

Answer 1

Answer:

Step-by-step explanation:

HOPE U UNDERSTAND THIS ANSWER!!!

Answer 2

Solution →

Solution is in the attachment so please check the attachment.

Formulas used →

• (a +b)(a-b) = a²-b²
• 1- cos²a = sin² a

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