मराठी

In the figure AB = 10 cm, ∠B = 30°, DC = 5 cm AD = ______. - Mathematics

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प्रश्न

In the figure AB = 10 cm, ∠B = 30°, DC = 5 cm

AD = ______.

पर्याय

  • 10 cm

  • 20 cm

  • 5 cm

  • 7.5 cm

MCQ
रिकाम्या जागा भरा
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उत्तर

AD = 5 cm.

Explanation:

In ΔABD, right-angled at D

use sin 30° = `(AD)/(AB)`

= `1/2 = (AD)/10` 

= `AD = 10 xx 1/2`

= 5 cm

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पाठ 20: Simple 2-D Problems in Right Triangle - MULTIPLE CHOICE QUESTIONS [पृष्ठ २४५]

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बी निर्मला शास्त्री Mathematics [English] Class 9 ICSE
पाठ 20 Simple 2-D Problems in Right Triangle
MULTIPLE CHOICE QUESTIONS | Q 7. (i) | पृष्ठ २४५
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