state gov PSTCL/PSPCL Clerk Mock Test 2021 Quantitative Aptitude Trigonometry Heights and Distances

A ladder 30 m long is placed against a wall in such a way that the foot of the ladder is 15 m from the wall. The angle of inclination of the ladder to the horizontal will be:

1
60° 
2
45° 
3
90° 
4
30° 
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