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Vlad [161]
3 years ago
8

Solve by factoring the polynomials completely

Mathematics
1 answer:
saw5 [17]3 years ago
4 0
The answer is
X = 2/3, -5
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PLEASE HELP ME!!!!!!!! 
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Angle θ between two vectors is given by, \theta =cos^{-1}( \frac{u
 \cdot v}{|u||v|} ); where u \cdot 
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2x² + 3x - 1 =0 by make quadratic equation​
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2 years ago
Use the circle unit to find sin 90 degrees
kati45 [8]

Answer:

Sin 90°=1

Step-by-step explanation:

A unit circle is a circle with a radius of 1 .Because the radius is 1, it is possible to directly measure the sine, cosine and tangent.

<em>using the unit circle where 90° is the limit as the hypotenuse approaches the vertical y-axis which is positive.</em>

Sine=opposite/hypotenuse

Sin=O/H

<u>Applying the limits</u>

Sine 90°=1/1= 1

cos 90° =0/1 =0

or

When the angle formed at the origin of the unit circle in the 1st quadrant is 0°, cos 0°=1 sin0°=0  and tan 0°=0

When we increase the angle until it is 90°, cos 90°=0, sin 90°=1 and tan 90°=undefined

 

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