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document.write( "7² + 24² = c² compare that equation to the Pythagorean theorem:\r\n" );
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document.write( "a² + b² = c²\r\n" );
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document.write( "So a = 7, b = 24, \r\n" );
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document.write( "c² = 7² + 24² = 49 + 576 = 625\r\n" );
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document.write( "c = √625 \r\n" );
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document.write( "c = 25\r\n" );
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document.write( "That suggests this right triangle:\r\n" );
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\r\n" );
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document.write( "Capital letters A.B, and C indicate the three angles, \r\n" );
document.write( "Small letters a,b, and c represent the three sides \r\n" );
document.write( "opposite the corresponding angles.\r\n" );
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document.write( "The side \"a\" is the side opposite (across the triangle) from angle \"A\"\r\n" );
document.write( "The side \"b\" is the side opposite (across the triangle) from angle \"B\"\r\n" );
document.write( "The side \"c\" is the side opposite (across the triangle) from angle \"C\"\r\n" );
document.write( "The angle \"C\" is normally chosen as the 90° angle in a right triangle.\r\n" );
document.write( "The longest side \"c\", which is opposite the right angle C is called the\r\n" );
document.write( "\"hypotenuse\"\r\n" );
document.write( "The side \"a\" is the side adjacent (next to) the acute angle B\r\n" );
document.write( "The side \"b\" is the side adjacent (next to) the acute angle A\r\n" );
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document.write( "As the other tutor mentioned, you didn't tell which angle to find the\r\n" );
document.write( "trigonometric ratios of, so I'll do both. The abbreviations for the\r\n" );
document.write( "six trig ratios are\r\n" );
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document.write( "sine = sin( )\r\n" );
document.write( "cosine = cos( )\r\n" );
document.write( "tangent tan( )\r\n" );
document.write( "cotangent = cot( )\r\n" );
document.write( "secant = sec( )\r\n" );
document.write( "cosecant = csc( )\r\n" );
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document.write( "and you must always put the angle in parentheses to indicate\r\n" );
document.write( "which angle you are talking about.\r\n" );
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document.write( "If you are talking about acute angle A then\r\n" );
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document.write( "sin(A) =
=
=
\r\n" );
document.write( "cos(A) =
=
=
\r\n" );
document.write( "tan(A) =
=
=
\r\n" );
document.write( "cot(A) =
=
=
\r\n" );
document.write( "sec(A) =
=
=
\r\n" );
document.write( "csc(A) =
=
=
\r\n" );
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document.write( "If you are talking about acute angle B then\r\n" );
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document.write( "sin(B) =
=
=
\r\n" );
document.write( "cos(B) =
=
=
\r\n" );
document.write( "tan(A) =
=
=
\r\n" );
document.write( "cot(B) =
=
=
\r\n" );
document.write( "sec(B) =
=
=
\r\n" );
document.write( "csc(B) =
=
=
\r\n" );
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document.write( "Notice the Cofunction identities: \r\n" );
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document.write( "sin(A)=cos(B), cos(A)=sin(B), tan(A)=cot(B), \r\n" );
document.write( "cot(A)=tan(B), sec(A)=csc(B), csc(A)=sec(B)\r\n" );
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document.write( "Notice the Reciprocal identities:\r\n" );
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document.write( "
,
,
,
,
,
\r\n" );
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document.write( "
,
,
,
,
,
\r\n" );
document.write( "\r\n" );
document.write( "Edwin
\n" );
document.write( "