Question

Sin 130° cos 55° + cos40° cos125°​

Answer 1

Answer:

cos (A-B) = cosA×cosB + sinA×sinB

A=130

B=40

A-B = 130-40 = 90

Step-by-step explanation:

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Answer 2

Sin 130° cos 55°+ cos 40° cos 125°

The Correct Answer is 0