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Mathematics 20 Online
OpenStudy (anonymous):

If the tan of angle x is 22 over 5, and the triangle was dilated to be two times as big as the original, what would be the value of the tan of x for the dilated triangle? Hint: Use the slash symbol ( / ) to represent the fraction bar and enter the fraction with no spaces.

OpenStudy (anonymous):

Wouldn't it be 22/5?

OpenStudy (anonymous):

x=22/5

OpenStudy (nikato):

I guess it would be the same. When you dilate the triangle, the angle should stay the same and same ratio for sides of triangle

OpenStudy (anonymous):

ok I was just making sure do you mine checking my answers ?

OpenStudy (anonymous):

for a couple more ?

OpenStudy (anonymous):

If the sin 30° is 1 over 2, then the cos ____° = _____. A) 60° ; 1/2 B) 30° ; square root 2/2 C) 60° ; square root 3/2 D) 30° ; 1

OpenStudy (anonymous):

This i got a bit confused on so I chose B

OpenStudy (nikato):

No it's A. It's kinda hard to explain it. So you have right triangle ABC, with right angle B. So A and C are complementary. And A is 30 , then C is 60 There's a theorem or identity that states sin <A = cos <C

OpenStudy (anonymous):

oh ok I get what i messed up on thanks

OpenStudy (anonymous):

Find the cosine ratio of angle Θ. Hint: Use the slash symbol ( / ) to represent the fraction bar and enter the fraction with no spaces.

OpenStudy (anonymous):

i put 15/17

OpenStudy (nikato):

Cosine is adjacent/hypotenuse So Should be 8/17 15/17 would be sine

OpenStudy (anonymous):

ok thanks

OpenStudy (anonymous):

Find the tangent ratio of angle Θ. Hint: Use the slash symbol ( / ) to represent the fraction bar and enter the fraction with no spaces.

OpenStudy (anonymous):

i put 5/3

OpenStudy (nikato):

Tangent is opposite/adjacent So 12/5 What you did, 5/13 which is adjacent/hypotenuse is cosine

OpenStudy (anonymous):

thanks ok last one

OpenStudy (anonymous):

Find the sine ratio of angle Θ. Hint: Use the slash symbol ( / ) to represent the fraction bar and enter the fraction with no spaces.

OpenStudy (anonymous):

3/5

OpenStudy (anonymous):

thats my answer 3/5

OpenStudy (nikato):

Sine is opposite/hypotenuse So 4/5 You got the hypotenuse right but the opposite is the side opposite the angle. 3 is the adjacent side. You had found the cosine ratio

OpenStudy (anonymous):

ohh ok i get now thanks :)

OpenStudy (nikato):

Ok. You're welcome

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