Answer:
In order to solve a right triangle, you must first figure out which angle is the right angle. Knowing the right angle will also tell you which side is the hypotenuse, since the hypotenuse will always stand opposite the right angle. In this text, for the sake of consistency, in all triangles we will designate angle C as the right angle, and side c and the hypotenuse. To finish solving a right triangle, you then must either know the lengths of two sides, or the length of one side and the measure of one acute angle. Given either of these two situations, a triangle can be solved. Any further information about a triangle may be helpful, but it is not necessary.There are four basic techniques to use in solving triangles.Using the Pythagorean Theorem, once two sides are known, the third side can be calculated.Using the fact that the acute angles of a right triangle are complementary, once one acute angle is known, the other can be calculated.Using the definitions of the trigonometric functions, any two parts of a triangle can be related in an equation to equal a third part.Using the definitions of the inverse trigonometric functions, any two sides of a triangle can be related in an equation to equal the inverse function of an unknown acute angle
Step-by-step explanation:
Answer:
Step-by-step explanation:
The equation to solve is:
To get rid of the "square", we need to take square root of both sides:
Then we use algebra to find the value(s) of x. Remember, when we take square root, we have to add up a "+-" (on the right side). Shown below:
So these are 2 answers for x.
4 x -5= -20 and -20 + 2 = -18
The number is -5
Answer: 3x+6 = 2(x+6)
Step-by-step explanation:
Ralph's age: y; Sara's age: x
Ralph is 3 times as old as Sara: y = 3x
In 6 years, Ralph will be only twice as old as Sara will be then: (y+6) = 2(x+6)
Substitute y=3x into (y+6) = 2(x+6).
3x+6 = 2(x+6)
I will say like this:
1. There are two car who travel 160 miles apart and meet in 2 hours. So first, I would think of each car is 40 mph, because two cars travel 80 in one hour, and two hours will be 160.
2. Then, the first car will travel with the speed is 34 mph and the other one will be 46 mph, because one car travels 6 mph faster than one car.