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4 years ago

two angles form a straight angle. what is the one angle measures 89°. what is the measure of the other angle?

2 answers:

8 0

Sum of angles in a straight line is 180 degrees.
If the angles are two, it means they both add up to 180 degrees.

Since one of the angles is 89°, let the other be y.

y + 89 = 180

y = 180 - 89

y = 91

The other angle is 91°

ICE Princess25 [194]4 years ago

4 0

A straight line is = to 180 degrees (straight angle) so the formula would be
X+89=180
subtract the 89 from both sides and you get x=91
so the other angle is 91 degrees

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Write down the decimal equivalent to;

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3 years ago

Read 2 more answers

Statements

vazorg [7]

Answer:

See Explanation

Step-by-step explanation:

The question has unclear information.

So, I'll answer from scratch

Given

ABC = Right angled triangle

DB bisects ABC

Required

Prove that CBD = 45

From the question, we have that:

ABC is right angled at B

So, when DB bisects ABC, it means that DB divides ABC into two equal angles.

i.e.

$CBD = ABD$

and

$CBD + ABD = 90$

Substitute CBD for ABD in $CBD + ABD = 90$

$CBD + CBD = 90$

$2CBD = 90$

Divide both sides by 2

$\frac{2CBD}{2} = \frac{90}{2}$

$CBD = \frac{90}{2}$

$CBD = 45$

Hence, it is proved that $CBD = 45$

<em>Follow the above explanation and use it to answer your question properly</em>

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Answer: 50 students

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