Math, asked by Chinthan10, 1 year ago

Convert the subtraction into multiplication
Cos 35-Cos 15

Answers

Answered by palak60

2

-2sin25sin10 is the required answer of this...

Chinthan10: answer is -2sin24.sin11

Chinthan10: my question wz wrong

Chinthan10: u r correct

Chinthan10: can u tell me the steps

Answered by rachit751

0

cosA-cosB=
-2sin(A+B/2).sin(A-B/2)
cos35-cos15
=-2sin(35+15/2).sin(35-15/2)
=-2sin25.sin10

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