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densk [106]
3 years ago
8

How would you read this inequality? Answer in a sentence. x<21

Mathematics
1 answer:
Lubov Fominskaja [6]3 years ago
5 0

Answer:

x is less than twenty one

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If sinA =3/5 and A+B =90 find cosB
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Other method:

Look at the picture.

\sin\theta=\dfrac{opposite}{hypotenuse}\\\\\sin A=\dfrac{3}{5}\to opposite=3\ and\ hypotenuse=5

\cos\theta=\dfrac{adjacent}{hypotenuse}\\\\adjacent=3\ and\ hypotenuse=5\to\cos B=\dfrac{3}{5}

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