Question

if (6x-4)° and (4x+4)° are complementary angles,find x.

Answer 1

they are complementary angles
hence
6x-4+4x+4=90
10x=90
x=9

Answer 2

Concept Introduction:

Two angles are said to be complementary when sum of them is $90$°.

Given: $(6x-4)$° and $(4x+4)$° are complementary angles.

To Find:

We have to find the value of, x.

Solution:

According to the problem,

If the given angle are complementary then:

$(6x-4)+(4x+4)=90$

⇒$10x+4-4=90$

⇒$x=9$°

Final Answer:

The value of x is $9$°.

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