Question

ᴄʜᴀᴘᴛᴇʀ--6 ᴛʀɪᴀɴɢʟᴇꜱ

Qꜱᴛɴ:
ɪɴ ᴀ ᴛʀɪᴀɴɢʟᴇ ᴀʙᴄ, ᴀᴅ ᴘᴇʀᴘᴇɴᴅɪᴄᴜʟᴀʀ ᴛᴏ ʙᴄ ᴀɴᴅ (ʙᴄ)^2-(ʙᴀ)^2=(ᴀᴄ)^2. ᴘʀᴏᴠᴇ ᴛʜᴀᴛ (ᴀᴅ)^2=ʙᴅ×ᴅᴄ.

ᴘʟᴇᴀꜱᴇ ᴅᴏɴᴛ ꜱᴘᴀᴍ...!​

Answer 1

Answer:

the movement of plant organ due to change in intensity of both night and temperature is called sleep movement.

Step-by-step explanation:

hi malayali aanu alle

njanum malayali aanu

enne inbox chaiyavo please

Answer 2

Answer:

Given:-

AD perpendicular to BC

$(bc) {}^{2} - (ba) {}^{2} = (ac) {}^{2}$

To prove:-

$(ad) {}^{2} = bd \times dc$

In triangle ABD

AD perpendicular to BD

using pythagoras theorem,

$h {}^{2} = a {}^{2} - b {}^{2}$

$(ab) {}^{2} = (ad) {}^{2} - (bd) {}^{2} \: \: \: \: \: (1)$

similarly

In triangle ADC

$(ac) {}^{2} =( ad) {}^{2} - (dc) {}^{2} \: \: \: \: (2)$

adding (1) and (2)

$(ab) {}^{2} + (ac) {}^{2} = ((ad) {}^{2} - (bd) {}^{2} ) + \\( (ad) {}^{2} - (dc) {}^{2} )$

$(ab) {}^{2} + (ac) {}^{2} = 2(ad) {}^{2} - (bd) {}^{2} - (dc) {}^{2}$

(അറീല.. തോറ്റു )

Step-by-step explanation:

✌️