Each pair of homologous sides (which are located in the same position) of a right triangle whose angles are equal will be proportional . To make it easier to interpret what is being explained the typical triangle legs 3 cm and 4 cm which will have its hypotenuse of 5 cm
Proportionality can also be written about the corresponding sides. What is important is that the angle in all cases is the same.
This is important because it allows the angles relate to the ratio of the proportion of the sides . This relationship has the property of uniqueness and ownership of completeness ( for each pair of corresponding sides there is always a single value (ratio ) related to a certain [ exists and is unique ] angular amplitude) , so a function is set to which we will be called trigonometric
The Breast and Cosecant functions are reversed. Also Drying and inverse cosine functions. They are finally reverse the Tangent Cotangent functions That is:
The trigonometric functions are periodic functions , repeat the image every 360 value . Thus we have: cos 60 = cos 420 ° = 0.5
Trigonometric functions complementary angles
We develop the trigonometric functions by triangles complementary angles because the angles are not straight are complementary : a + b = 90 b = 90 Þ - to
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