Question

que- prove that cos(81°+∅) = sin(9°-∅) please answer me i mark him as a branliest and give 5 stars rating

Answer 1

Answer:

Hello friend here is your answer

Cos(81)-Sin(9)=Cos(90-9)-sin9

=sin 9-Sin9

=0

I used Cos(90-A)=SinA formula

Step-by-step explanation:

Hope you understand please mark as brainliest

Answer 2

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