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Note by Sangeeta Mishra 4 years, 9 months ago

Easy Math Editor

*italics*

_italics_

**bold**

__bold__

- bulleted- list

1. numbered2. list

paragraph 1paragraph 2

paragraph 1

paragraph 2

[example link](https://brilliant.org)

> This is a quote

This is a quote

# I indented these lines # 4 spaces, and now they show # up as a code block. print "hello world"

2 \times 3

2^{34}

a_{i-1}

\frac{2}{3}

\sqrt{2}

\sum_{i=1}^3

\sin \theta

\boxed{123}

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Construct point I, which is the reflection of D about FE.

\(\alpha = \angle IHE\)

\(\alpha+\beta = \angle IHE + \angle EHC = \angle CHI\)

Connect CI. Note that \(\triangle HCI\) is a right angled isosceles triangle, thus \(\angle CHI = 45^\circ \)

\(\gamma = 45^\circ\)

Thus sum of 3 angles \(=90^\circ\)

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Thank you!

answer =90

y=45degree. alpha+ beta= 45 degree as tan ( a + b)= tan a + tan b /(1-tan a * tanb)= (1/2+1/3)/(1-1/2*1/3)=1 =90 degree.

90 degree!! tan^-1(1)+tan^-1(0.5)+tan^-1(1/3)=90

This was in our fiitjee booklet last year.Quite easy

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Easy Math Editor

`*italics*`

or`_italics_`

italics`**bold**`

or`__bold__`

boldNote: you must add a full line of space before and after lists for them to show up correctlyparagraph 1

paragraph 2

`[example link](https://brilliant.org)`

`> This is a quote`

Remember to wrap math in \( ... \) or \[ ... \] to ensure proper formatting.`2 \times 3`

`2^{34}`

`a_{i-1}`

`\frac{2}{3}`

`\sqrt{2}`

`\sum_{i=1}^3`

`\sin \theta`

`\boxed{123}`

## Comments

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TopNewestConstruct point I, which is the reflection of D about FE.

\(\alpha = \angle IHE\)

\(\alpha+\beta = \angle IHE + \angle EHC = \angle CHI\)

Connect CI. Note that \(\triangle HCI\) is a right angled isosceles triangle, thus \(\angle CHI = 45^\circ \)

\(\gamma = 45^\circ\)

Thus sum of 3 angles \(=90^\circ\)

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Thank you!

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answer =90

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y=45degree. alpha+ beta= 45 degree as tan ( a + b)= tan a + tan b /(1-tan a * tanb)= (1/2+1/3)/(1-1/2*1/3)=1 =90 degree.

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90 degree!! tan^-1(1)+tan^-1(0.5)+tan^-1(1/3)=90

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This was in our fiitjee booklet last year.Quite easy

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