Question

If the angles of a triangle are in the ratio 2:3:4, find the measure of each angle.
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Answer 1

Step-by-step explanation:

let the angles be 2x,3x,4x

sum of all angles =180

2x +3x+4x=180

9x =180

x=180/9

x=20

So, 2x =40

3x=60

4x=80

Answer 2

$\huge\mathfrak\green{ᴀɴsᴡᴇʀ}$

ᴀɴɢʟᴇ sᴜᴍ ᴘʀᴏᴘᴇʀᴛʏ ᴏғ ᴀ ᴛʀɪᴀɴɢʟᴇ ɪs 180 ᴅᴇɢʀᴇᴇs. ɪᴛ ɪs ɢɪᴠᴇɴ ᴛʜᴀᴛ ᴛʜᴇ ᴀɴɢʟᴇs ᴀʀᴇ ɪɴ ᴛʜᴇ ʀᴀᴛɪᴏ $2:3:4$

sᴏ ʟᴇᴛ ᴜs ᴄᴏɴsɪᴅᴇʀ ᴛʜᴇ ᴀɴɢʟᴇs ᴀs $2x,3x$ ᴀɴᴅ $4x.$

$2x+3x+4x=9x$

$Angle \: sum \: of \: triangle = 180$

sᴏ $9x =180^{0}$

$or \: x= \frac{9}{180} ={20}^{0}$

$∴2x=2×20={40}^{0}$

$3x=3×20= {60}^{0}$

$and \: 4x=4×20 = {80}^{0}$

$∴ the \: angles \: are  {40}^{0}, {60}^{0},{80}^{0}$