ᴛʜᴇ ᴛʜʀᴇᴇ ᴀɴɢʟᴇs ᴏғ ᴀ ᴛʀɪᴀɴɢʟᴇs ᴀʀᴇ ɪɴ ᴛʜᴇ ʀᴀᴛɪᴏ 1:2:3 . ғɪɴᴅ ᴛʜᴇ ᴀʟʟ ᴛʜᴇ ᴀɴɢʟᴇs ᴏғ ᴛʜᴇ ᴛʀɪᴀɴɢʟᴇs .
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Answer:
.
Explanation:
ʟᴇᴛ , ᴍᴇᴀsᴜʀᴇs ᴏғ ᴛʜᴇ ᴀɴɢʟᴇs ᴏғ ᴛʀɪᴀɴɢʟᴇs ʙᴇ xᵒ , 2xᵒ , 3xᵒ .
ᴛʜᴇɴ , ᴀᴄᴄᴏʀᴅɪɴɢ ᴛᴏ ᴀɴɢʟᴇ sᴜᴍ ᴘʀᴏᴘᴇʀᴛʏ ᴏғ ᴛʀɪᴀɴɢʟᴇ ,
xᵒ,2xᵒ,3xᵒ = 180ᵒ
⇛ 6xᵒ = 180ᵒ
⇛ xᵒ = [ 180/6 ]ᵒ
⇛ x⁰ = 30ᵒ [ ᴀɴs ]
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Asmall source of light is 4 m below the surface of water of refractive index 5/3. in order to cut off all the light,
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