Summary:
Explanation: The image shows a right-angled triangle with sides labeled. We need to find the cosine, sine, tangent, and cotangent for angles A and B using the definitions of these trigonometric functions. The Pythagorean theorem can be used to find the missing side if necessary.
Step-by-step solution:
The image displays a right-angled triangle. Let's assume the vertices are A, B, and C, with the right angle at C. The side opposite angle A is BC, the side opposite angle B is AC, and the hypotenuse is AB.
From the image, we can identify the following:
- Side AC = 5
- Hypotenuse AB = 13
- Angle C is the right angle (90 degrees).
- Side BC is unknown, let's denote it as 'x'.
First, we can find the length of side BC using the Pythagorean theorem: $$ $$AC^2 + BC^2 = AB^2$$ $$.
$$ $$5^2 + x^2 = 13^2$$ $$
$$ $$25 + x^2 = 169$$ $$
$$ $$x^2 = 169 - 25$$ $$
$$ $$x^2 = 144$$ $$
$$ $$x = √{144}$$ $$
$$ $$x = 12$$ $$. So, BC = 12.
Now, we can calculate the trigonometric values:
For angle A:
- Cosine (cos A): Adjacent side / Hypotenuse = AC / AB = 5 / 13
- Sine (sin A): Opposite side / Hypotenuse = BC / AB = 12 / 13
- Tangent (tan A): Opposite side / Adjacent side = BC / AC = 12 / 5
- Cotangent (cot A): Adjacent side / Opposite side = AC / BC = 5 / 12
For angle B:
- Cosine (cos B): Adjacent side / Hypotenuse = BC / AB = 12 / 13
- Sine (sin B): Opposite side / Hypotenuse = AC / AB = 5 / 13
- Tangent (tan B): Opposite side / Adjacent side = AC / BC = 5 / 12
- Cotangent (cot B): Adjacent side / Opposite side = BC / AC = 12 / 5
Final Answer:
cos A = 5/13
sin A = 12/13
tg A = 12/5
ctg A = 5/12
cos B = 12/13
sin B = 5/13
tg B = 5/12
ctg B = 12/5