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3 years ago

Please help :) A scientific question may lead to a(n) blank , which can be tested.

Mathematics

1 answer:

lisabon 2012 [21]3 years ago

5 0

Answer:

Hypothesis

Step-by-step explanation:

The hypothesis is an educated guess that can be tested through experimentation.

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What are the sine cosine and tangent of theta=7pi/4 radians

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Step-by-step explanation:

$\frac{7\pi }{4}$ is in the fourth quadrant

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sin([ $\frac{7\pi }{4}$ ) = - sin( $\frac{\pi }{4}$ ) = - $\frac{1}{\sqrt{2} }$ = - $\frac{\sqrt{2} }{2}$

cos( $\frac{7\pi }{4}$ ) = cos( $\frac{\pi }{4}$ ) = $\frac{\sqrt{2} }{2}$

tan( $\frac{7\pi }{4}$ = - tan( $\frac{\pi }{4}$ = - 1

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