Which trigonometric ratios are POSITIVE in the 4th quadrant?
cosine
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15
Which trigonometric functions are POSITIVE in the 1st quadrant?
sine, cosine and tangent
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O is the centre of the circle. Find the value of x
Thales circle theorem says <ABC = 90*, so <x = 27*
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What is 5Ï/6 radians in degrees?
150 degrees
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What is 2Ï/3 radians in degrees?
120 degrees
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thief
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25
gold
Win 50 points!
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shark
Other team loses 20 points!
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baam
Lose 15 points!
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15
Find the red angle.
-1000 degrees
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15
Explain the Thales theorem.
If three points A, B, and C lie on the circumference of a circle, whereby the line AC is the diameter of the circle, then the angle â ABC is a right angle (90°)
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lifesaver
Give 20 points!
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magnet
Take 25 points!
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gift
Win 10 points!
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lifesaver
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15
How many radians are in 45°?
Ï/4
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Is TANGENT in the 2nd quadrant positive or negative?
negative
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In what quadrant is 285°
4th quadrant
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Find the red angle.
180 degrees
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Which trigonometric ratios are POSITIVE in the 3rd quadrant?
