Question

the cosine of an angle is the ratio of the length of the leg_______that angle to the length of the _________.?help please

Answer 1

The cosine of an angle is the ratio of the length of the leg adjacent to the angle to the length of the hypotenuse.

Explanation:

• In a right angled triangle, the cosine of an angle is the length of the adjacent side divided by the length of the hypotenuse.
• Also it is the sine of the complementary angle.
• The abbreviation is cos
• The longest side of the triangle is called the hypotenuse,
• The side opposite the angle theta is called the opposite side,
• The third side is called the adjacent side.
• Therefore,
  `cos(\theta) = (adjacent)/( hypotenuse)`