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anonymous
 one year ago
Challenge! Ready? Write the ratios for sin A and cos A. The triangle is not drawn to scale.
http://assets.openstudy.com/updates/attachments/52f5130ae4b0512c88e57688javo2213917929282794568452232011112633am1351153605.png
anonymous
 one year ago
Challenge! Ready? Write the ratios for sin A and cos A. The triangle is not drawn to scale. http://assets.openstudy.com/updates/attachments/52f5130ae4b0512c88e57688javo2213917929282794568452232011112633am1351153605.png

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mathstudent55
 one year ago
Best ResponseYou've already chosen the best response.0Have you heard of SOHCAHTOA?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Hint: it ends in a decimal

mathstudent55
 one year ago
Best ResponseYou've already chosen the best response.0Use the parts of SOHCAHTOA of the sine and the cosine.

mathstudent55
 one year ago
Best ResponseYou've already chosen the best response.0I hate to tell you this, but it doesn't.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Did I make a mistake then?

DanJS
 one year ago
Best ResponseYou've already chosen the best response.0what is the opposite side of angle A

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0This type of triangle with the 90degrees and the 45degrees is a special type of triangle. Isosceles, i think. This means that the 7 side and the y side are always equal. the 45degrees and the unlabeled angle are the same, because the angles of the triangle add to 180. so, 180  90 45 = 45. the unknown angle is 45degrees. Which also proves that the sides, 7 and y are the same length. Then to find x, you can use Pathagorean's theorem. (spelling?) ... which says C2=A2+B2 where C is the hypotenuse (across from the right angle), and A and B are the other sides. So, for your problem, x2=72+72=49+49=98 x=98−−√

DanJS
 one year ago
Best ResponseYou've already chosen the best response.0an isosceles triangle has two sides of the same length, this one does not

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Then Using SOHCAHTOA hypotenuse = opposite / sin x = 7 / sin45 x = 9.9 adjacent = opposite / tan y = 7 / tan45 y = 7 Or using Pythagoras Theorem. A right angle triangle with two 45 degree angles means that two sides are the same. Therefore y also equals 7. a^2 = b^2 + c^2 where a is the hypotenuse. x^2 = 7^2 + 7^2 x^2 = 49 + 49 x^2 = 98 x = 9.9

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0I am redeeming myself....I guess I did it wrong sorry guys.

DanJS
 one year ago
Best ResponseYou've already chosen the best response.0For a right triangle, the sin of the angle is the ratio of the opposite side divided by the hypotenuse side lengths

DanJS
 one year ago
Best ResponseYou've already chosen the best response.0the sin of A would simply be 48/50

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0I should have set up another challenge

DanJS
 one year ago
Best ResponseYou've already chosen the best response.0oh, you are trying to challenge the panel maybe?, so you already know these things then

DanJS
 one year ago
Best ResponseYou've already chosen the best response.0oh, this is my fault, sorry

DanJS
 one year ago
Best ResponseYou've already chosen the best response.0they need a new tab section, for these type questions
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