Changes
From Karnataka Open Educational Resources
201 bytes added
, 05:58, 11 July 2014
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| #In Right angled ∆ABC,∟BAC= 90°,∟B: ∟C = 1:2 andAC= 4cm.calculate thelenght of BC | | #In Right angled ∆ABC,∟BAC= 90°,∟B: ∟C = 1:2 andAC= 4cm.calculate thelenght of BC |
| + | ''''''Solution''''''''' |
| + | in some special right angled triangle |
| + | whose angle ratio 1:2:3 that is 30-60-90 |
| + | has their sides ratio 1: <math>{\sqrt3}</math> :2 |
| + | |
| + | in ▲ABC, |
| + | BC = 2. AC |
| + | |
| + | BC = 2.4 |
| + | |
| + | BC = 8 cm |
| + | |
| #A door of width 6 mt has an archabove it having aheight of 2 mt , find the radius if the arch | | #A door of width 6 mt has an archabove it having aheight of 2 mt , find the radius if the arch |
| # The sides of a right angled triangle are in an AP. Show that sides are in ther ratio 3:4:5 | | # The sides of a right angled triangle are in an AP. Show that sides are in ther ratio 3:4:5 |