🕠 āϘ⧜িāϰ āĻ•াāϟা āĻ“ āĻŽিāύিāϟেāϰ āĻ•াāϟাāϰāĻŽāϧ্āϝেāĻŦāϰ্āϤী āĻ•োāĻŖ āύিāϰ্āϪ⧟েāϰ āϏāĻšāϜ āĻ•ৌāĻļāϞ--


_____________
✏āϟেāĻ•āύিāĻ•ঃ
(11 × M - 60 × H) ÷ 2
.
● āĻāĻ–াāύে,
M= āĻĒ্āϰāĻļ্āύে āωāϞ্āϞেāĻ–িāϤ āύিāϰ্āϧাāϰিāϤ āĻŽিāύিāϟ।
H= āĻĒ্āϰāĻļ্āύে āωāϞ্āϞেāĻ–িāϤ āύিāϰ্āϧাāϰিāϤ āϘāύ্āϟা
🍁āĻ•োāύ āĻ•োāĻŖেāϰ āĻŽাāύ ā§§ā§Žā§Ļ° āĻāϰ
āωāĻĒāϰে āĻšāϞে āϤা ā§Šā§Ŧā§Ļ° āĻšāϤে āĻŦি⧟োāĻ—
āĻ•āϰāϞে āύিāϰ্āĻŖেāϝ় āĻ•োāĻŖেāϰ āĻŽাāύ āĻĒাāĻ“ā§Ÿা āϝাāĻŦে।

● āϘ⧜িāϰ ⧍āϟি āϘāύ্āϟাāϰ āĻĻাāĻ—েāϰ
āĻŽāϧ্āϝেāĻŦāϰ্āϤী āĻ•োāύ=ā§Šā§Ļ°
●āϘ⧜িāϰ āĻ•েāύ্āĻĻ্āϰে āĻ‰ā§ŽāĻĒāύ্āύ āĻ•োāύ=ā§Ŧā§Ļ°
.
✏āωāĻĻাāĻšāϰāύ 1:---
⧍ āϟা ā§§ā§Ģ āĻŽিāύিāϟেāϰ āϏāĻŽā§Ÿ āϘāύ্āϟাāϰ
āĻ•াঁāϟা āĻ“ āĻŽিāύিāϟেāϰ āĻ•াঁāϟাāϝ় āĻ•āϤ
āĻĄিāĻ—্āϰি āĻ•োāύ āĻ‰ā§ŽāĻĒāύ্āύ āĻ•āϰে?
✔āϏāĻŽাāϧাāύঃ
āĻŽāϧ্āϝেāĻŦāϰ্āϤী āĻ•োāύ=
(11 × M - 60 × H) ÷ 2
=(11 × 15 - 6 × 2)÷2
=(165 - 120)÷2
=45÷2
=22.5° (āĻĄিāĻ—্āϰি) (Ans)
'
✏āωāĻĻাāĻšāϰāĻŖ 2 :---
āϘ⧜িāϤে āϝāĻ–āύ 4 āϟা 30 āĻŽিāύিāϟ āĻŦাāϜāĻŦে। āϤāĻ–āύ āϘāύ্āϟাāϰ āĻ•াঁāϟা āĻ“ āĻŽিāύিāϟেāϰ āĻ•াঁāϟাāϰ āĻŽāϧ্āϝে āĻ•āϤ āĻĄিāĻ—্āϰি āĻ•োāύ āĻ‰ā§ŽāĻĒāύ্āύ āĻ•āϰে?
'
✔āϏāĻŽাāϧাāύ:--
āφāĻŽāϰা āϜাāύি āĻĒ্āϰāĻĻāϤ্āϤ āĻ•োāĻŖ:---
(11 × M - 60 × H) ÷ 2
. ' . ( 11 × 30 - 60 × 4 ) ÷ 2
= 90 ÷ 2
= 45° (Ans)

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