Trigonometry: Calculate Trigonometric Functions for Right Triangles
Published on June 7, 2025
Find the values of sine, cosine, tangent, cosecant, secant, and cotangent for the given right triangles. The solution involves applying trigonometric ratios and the Pythagorean theorem.
Question
Answer
- Opposite side = 4
- Adjacent side = 3
- Hypotenuse = 5
- Opposite side = 8
- Adjacent side = 15
- Hypotenuse = 17
- Opposite side = 2
- Hypotenuse = 5
- We need to find the adjacent side using the Pythagorean theorem:
.
Let the adjacent side be.
- Adjacent side =
-
-
-
(rationalized) -
-
(rationalized) -
- Opposite side =
- Adjacent side =
- Hypotenuse =
- We need to find the adjacent side. The image shows the angle
at the top vertex.
Relative to this:
Opposite side =
Adjacent side =
Hypotenuse =
- Opposite side = 1
- Hypotenuse = 3
- We need to find the adjacent side using the Pythagorean theorem:
.
Let the adjacent side be.
- Adjacent side =
-
-
-
(rationalized) -
-
(rationalized) -
- Opposite side =
- Adjacent side =
- We need to find the hypotenuse using the Pythagorean theorem:
.
Let the hypotenuse be.
- Hypotenuse =
-
(rationalized) -
(rationalized) -
-
-
-
The values of the 6 trigonometric functions for each triangle are as follows: