anonymous
  • anonymous
WILL FAN AND MEDAL Two sides of a right triangle ABC​ (C is the right​ angle) are given. Find the indicated trigonometric function of the given angle. Give exact answers with rational denominators. Find secB when a=10 and b=7. choices: A. 10sqrt(149)/149 B. sqrt149/10 C. 10sqrt(149)/7 D. 7sqrt(149)/149
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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jamiebookeater
  • jamiebookeater
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tkhunny
  • tkhunny
You could draw the right triangle and calculate the length of the missing side.
anonymous
  • anonymous
What would the hypotenuse be in the scenario described? |dw:1450138243100:dw|
anonymous
  • anonymous
12.2, right? Or do I have to use a square root?

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anonymous
  • anonymous
Thats techinically correct but it wants exact answers
tkhunny
  • tkhunny
The square root is more useful.
anonymous
  • anonymous
So yes keep the square root
anonymous
  • anonymous
Okay so sqrt(149). What's next?
anonymous
  • anonymous
So now secant is the inverse of cosine, so since cosine is adj./opposite what would secant be?
anonymous
  • anonymous
opposite/adj.
anonymous
  • anonymous
So what are the opposite and adjacent sides of angle B?
anonymous
  • anonymous
Omg I apologize I meant opposite and hypotenuse
anonymous
  • anonymous
I MEANT ADJ. and hypotenuse I am so sorry let's start over
anonymous
  • anonymous
So now secant is the inverse of cosine, so since cosine is adj./hypotenuse what would secant be?
anonymous
  • anonymous
It's fine, man. Don't worry about it, at least you fixed it, right? :)
anonymous
  • anonymous
And the secant would be hypotenuse/adj.
anonymous
  • anonymous
K now just plugin the numbers and you've got it
anonymous
  • anonymous
So it'd be sqrt(149)/10, right?
anonymous
  • anonymous
Yes that is right sorry I wasnt here to check it

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