Sin Cos formulas are based on the sides of the right-angled triangle. Sin and Cos are basic trigonometric functions along with tan function, in trigonometry. The sine of an angle is equal to the ratio of the opposite side to the hypotenuse whereas the cosine of an angle is equal to the...
Right Angled TrianglesSolving Triangles by Reflection Finding an Angle in a Right Angled Triangle Finding a Side in a Right Angled TriangleCongruent and SimilarCongruent Triangles Similar Triangles How to Find if Triangles are Similar Theorems about Similar Triangles Mean Proportional...
Use this formula to find an angle: Use the cosine rule if you know all 3 sides (to find an angle)OR if you know 2 sides and the angle in between (to find the 3rd side).In other situations try using the sine rule.Area of a triangle is A = Properties of sin, cos and tan S...
The trigonometric ratios of a triangle are also called the trigonometric functions. Sine, cosine, and tangent are 3 important trigonometric functions and are abbreviated as sin, cos and tan. Let us see how are these ratios or functions, evaluated in case of a right-angled triangle. Consider a...
Sine, Cosine and Tangent are the main functions used in Trigonometry and are based on a Right-Angled Triangle. Before getting stuck into the functions, it helps to give a name to each side of a right triangle: Opposite is always opposite the angle. And Adjacent is always next to the angl...
Figure 1. This figure is representative of a right angled triangle and the variables labelled on this triangle correspond with the Pythagorean Theorem and the three trigonometric functions. The lower case letters represent side length values and the capitalized letters represent angle values. This image...
Cofunction identitiesshow the relationship between the different complementary angles and the trigonometric functions that exist between the sine and cosine, tangent and cotangent, and secant and cosecant pairs. We can use the angle sum property of a right-angled triangle to derive the six cofunctio...
Isosceles triangle, two sides are equal in length Scalene triangle, all sides are unequal If is obtuse, angle MISSING IMAGE! 22109/img_43.gif cannot be found in /users/22109/img_43.gif. Please contact the submission author.Acute Triangle is an acute-angled triangle of height MISSING IMA...
cosecant In trigonometry, a function of an angle in a right-angled triangle found by dividing the length of the hypotenuse( the longest side ) by the length of the side opposite the angle. Thus the cosecant of an angle A,usually shortened to cosec A , is always greater than(or equal ...
A table for these functions often includes values at key angles in degrees (and sometimes in radians) in a right-angled triangle. Here is a commonly used table for sin, cos, and tan at angles of 0°, 30°, 45°, 60°, and 90°: Angle (°)SinCosTan 0 0 1 0 30 1/2 √3/2...