# Math

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"Point B (4,0) is rotated 45 degrees clockwise about the origin. Write the exact coordinates of B'."

• Math -

B' is ... (2√2 , -2√2)

• Math -

Make a sketch of the right-angled triangle with angle 45° and hypotenuse of 4
sin45 = y/4, cos45 = x/4
y = 4(√2/2) , x = 4√2/2

new point = B(2√2 , -2√2)

• Math -

Thanks so much!

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