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# Inverted Sin, How ?

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### #1granat  Members   -  Reputation: 122

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Posted 19 July 2001 - 01:26 AM

Is there a INVERTED SINUS function in C++ (Visual C++) ?? I mean instead of me giving the angle as parameter I give a number and receive the angle. I looked trough math.h but could not find it there... -- Look at you hacker. A Pathetic creature of meat and bone, panting and sweating as you run through my corridors. How can you challenge a perfect, immortal machine?-- "Yeah, I''ve seen people w/ ''so-called'' lives. They are petty and thoughtless." - Nazrix

### #2Julio  Members   -  Reputation: 116

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Posted 19 July 2001 - 01:29 AM

it''s in there, if you''re looking for an inversion of the sine function.

HHSDrum@yahoo.com

### #3granat  Members   -  Reputation: 122

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Posted 19 July 2001 - 01:42 AM

I automatically searched through the math.h file with the following search words: INV, SINI, ISIN etc...

Nothing was found...

### #4Dormeur  Members   -  Reputation: 122

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Posted 19 July 2001 - 01:57 AM

Actually, the inverted function of the sin function is the arcsin or asin function. So try looking for asin.

Okay, I just looked it up. It''s the asin function.

Dormeur

### #5stevenmarky  Members   -  Reputation: 369

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Posted 21 July 2001 - 10:07 AM

?why? -(sin) is the INVERTED SINUS function, right?
Or am I just confused..?

### #6 Anonymous Poster_Anonymous Poster_*   Guests   -  Reputation:

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Posted 21 July 2001 - 11:14 AM

stevenmarky:

An inverse trig function takes a value as it''s parameter, and returns the angle. So,

// using degreessin(45) = 0.7071asin(0.7071) = 45

Same deal with cos/acos, and tan/atan. They have an ''a'' in front, because they are called arc-sine, arc-cosine, and arc-tangent.

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