从给定的角度和边长找到菱形的面积

原文:https://www . geeksforgeeks . org/从给定的角度和边长找到菱形区域/

给定两个整数 A 和 X ，分别表示一个菱形的边长和一个角度，任务是求菱形的面积。

A 菱形是四边等长的四边形，其中相对的两边平行，相对的角度相等。

示例:

输入: A = 4，X = 60 T3】输出: 13.86

输入: A = 4，X = 30 T3】输出: 8.0

方法:对于边长为 a 且角度为 x 的菱形 ABCD ，三角形的面积 ABD 可以使用三角形的边-角-边特性通过以下公式计算:

三角形面积ABD = 1/2(a2)sin x 菱形面积 ABCD 将是 ABD 三角形面积的两倍。

因此，菱形面积ABCD=(a2)sin x

下面是上述方法的实现:

C++

// C++ Program to calculate
// area of rhombus from given
// angle and side length
#include <bits/stdc++.h>
using namespace std;

#define RADIAN 0.01745329252
// Function to return the area of rhombus
// using one angle and side.
float Area_of_Rhombus(int a, int theta)
{
    float area = (a * a) * sin((RADIAN * theta));
    return area;
}

// Driver Code
int main()
{
    int a = 4;
    int theta = 60;

    // Function Call
    float ans = Area_of_Rhombus(a, theta);

    // Print the final answer
    printf("%0.2f", ans);
    return 0;
}

// This code is contributed by Rajput-Ji

Java 语言(一种计算机语言，尤用于创建网站)

// Java Program to calculate
// area of rhombus from given
// angle and side length
class GFG{

static final double RADIAN = 0.01745329252;

// Function to return the area of rhombus
// using one angle and side.
static double Area_of_Rhombus(int a, int theta)
{
    double area = (a * a) * Math.sin((RADIAN * theta));
    return area;
}

// Driver Code
public static void main(String[] args)
{
    int a = 4;
    int theta = 60;

    // Function Call
    double ans = Area_of_Rhombus(a, theta);

    // Print the final answer
    System.out.printf("%.2f", ans);
}
}

// This code is contributed by Rajput-Ji

Python 3

# Python3 Program to calculate
# area of rhombus from given
# angle and side length

import math 

# Function to return the area of rhombus
# using one angle and side. 
def Area_of_Rhombus(a, theta): 

    area = (a**2) * math.sin(math.radians(theta))

    return area 

# Driver Code 
a = 4
theta = 60

# Function Call 
ans = Area_of_Rhombus(a, theta) 

# Print the final answer
print(round(ans, 2))

C

// C# Program to calculate
// area of rhombus from given
// angle and side length
using System;
class GFG{

static readonly double RADIAN = 0.01745329252;

// Function to return the area of rhombus
// using one angle and side.
static double Area_of_Rhombus(int a, int theta)
{
    double area = (a * a) * Math.Sin((RADIAN * theta));
    return area;
}

// Driver Code
public static void Main(String[] args)
{
    int a = 4;
    int theta = 60;

    // Function Call
    double ans = Area_of_Rhombus(a, theta);

    // Print the readonly answer
    Console.Write("{0:F2}", ans);
}
}

// This code is contributed by Rajput-Ji

java 描述语言

<script>

// Javascript Program to calculate
// area of rhombus from given
// angle and side length

// Function to return the area of rhombus
// using one angle and side.
function Area_of_Rhombus(a, theta){

    var area = (a**2) * Math.sin(theta *Math.PI/180);

    return area ;
}

// Driver Code
a = 4
theta = 60

// Function Call
ans = Area_of_Rhombus(a, theta)

 // Print the final answer
document.write(Math.round(ans * 100) / 100);

</script>

Output: 

13.86

时间复杂度:O(1) T5辅助空间:** O(1)

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