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4 years ago

What is the value of x?

Mathematics

2 answers:

nalin [4]4 years ago

7 0

we know that

An exterior angle is equal to the sum of the two non adjacent angles

In this problem

$100\°=x\°+70\°$

Solve for x

Subtract $70\°$ both sides

$x\°+70\°-70\°=100\°-70\°$

$x\°=30\°$

therefore

the answer is the option D

$30\°$

liq [111]4 years ago

6 0

An exterior angle is equal to the sum of the 2 non adjacent angles. In this case

100 = x + 70 Subtract 70
x = 100 - 70
x = 30

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$=-\dfrac1{\sqrt{\cos(2x)}}\dfrac1{\sqrt{1+\sin(2x)}}$

$=\boxed{-\dfrac1{\sqrt{\cos(2x)(1+\sin(2x))}}}$

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