Question

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

Answer 1

Answer:

here is your answer and once try to solve it yourself

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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