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प्रश्न
Find the angle made by a ladder of length 5m with the ground, if one of its end is 4m away from the wall and the other end is on the wall
उत्तर
AC is the length of the ladder.
In the right ΔABC,
cos θ = `"BC"/"AC"`
cos θ = `4/5`
= 0.8
cos θ = 0.8000
θ = 36°52′
Angle made by a ladder with the ground is 36°52′
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संबंधित प्रश्न
In the following table, a ratio is given in each column. Find the remaining two ratios in the column and complete the table.
| sin θ | `11/61` | `1/2` | `3/5` | ||||||
| cos θ | `35/37` | `1/sqrt3` | |||||||
| tan θ | `1` | `21/20` | `8/15` | `1/(2sqrt2)` |
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