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2 years ago

Need helpppp asapppp pleaseee help….

Mathematics

2 answers:

olga2289 [7]2 years ago

8 0

Answer: 72 Degree rotations to each consecutive vertex

Step-by-step explanation: Hope it's helpful

Rainbow [258]2 years ago

4 0

Answer:

72° equal vertex onto itself

Step-by-step explanation:

angle at a point=360°

360÷5=72°

i.e pentagon has 5sides

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2 years ago

If sinA=√3-1/2√2,then prove that cos2A=√3/2 prove that

Ivan

Answer:

$\boxed{\sf cos2A =\dfrac{\sqrt3}{2}}$

Step-by-step explanation:

Here we are given that the value of sinA is √3-1/2√2 , and we need to prove that the value of cos2A is √3/2 .

Given :-

• $\sf\implies sinA =\dfrac{\sqrt3-1}{2\sqrt2}$

To Prove :-

• $\sf\implies cos2A =\dfrac{\sqrt3}{2}$

Proof :-

We know that ,

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Simplify,

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2 years ago

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That's the equation :)

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