Math, asked by ashleydsouza512, 8 months ago

Cos 189 express it as a function of angles less than 45

Answers

Answered by akashdeepsinghjadaun
2

Answer:

-cos9°

Step-by-step explanation:

cos(180°+9°)

-cos9°

since, cos(180°+ θ)= -cosθ

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