Question

В треугольнике авс угол с равен 90 градусов ав равен 4 ас равен корень из 7 найдите синус а

Answer 1

1)по теореме пифагора найдем BC=11
2)11:4=2.75

Answer 2

Finding the Sin of Angle A in Triangle ABC

Given: - Angle C = 90 degrees - Side AB = 4 - Side AC = √7

To find: sin(A)

Solution

Using the Pythagorean theorem, we can find the length of side BC: - BC^2 = AB^2 + AC^2 - BC^2 = 4^2 + (√7)^2 - BC^2 = 16 + 7 - BC^2 = 23

Taking the square root of both sides: - BC = √23

Now, we can find sin(A) using the sine function: - sin(A) = opposite/hypotenuse - sin(A) = AC/BC - sin(A) = √7/√23 - sin(A) = √(7/23)

Therefore, sin(A) = √(7/23).