3 years ago

How do you find the missing length of a triangle when two lengths are given.

Mathematics

1 answer:

MaRussiya [10]3 years ago

5 0

Answer:

Step-by-step explanation:

For a right triangle you can do what is know as the pythagorean theorem which is a^2+b^2=c^2 , the a and b represents the legs of the triangle and the c is the hypotenuse.

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neonofarm [45]

Answer:

8 / sqrt(3)

Step-by-step explanation:

Since this is a right triangle, we can use trig functions

tan theta = opp / adj

tan A = BC / AC

tan 30 = BC / 8

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Read 2 more answers

The width of a rectangle is the length minus 2 units. the area of the rectangle is 35 units

Mariana [72]

Answer:

$Length=7units\\\\Width=5units$

Step-by-step explanation:

Width=(Length-2) units

W=(L-2) units

Area of the rectangle= 35 square units

Area = length* Width

$35= L*(L-2)\\\\35=L^2-2L$

Subtracting 35 both sides:

$L^2-2L-35=0$

Solving the quadratic equation for 'L' ;

Using factorization:

$L^2+5L-7L-35=0$

Taking common from the equation :

$L(L+5)-7(L+5)=0\\\\(L+5)(L-7)=0\\\\L+5=0\\\\L=-5$

$L-7=0\\\\L=7$

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$Length=7units\\\\Width=5units$

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Math Help? Please! : )

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