Same chapter3 marksDifficulty: Medium
In a right-angled triangle one acute angle is 30° and the side opposite it is 7 cm. Find the hypotenuse and the third side.
Solution of Right Triangles
3 marksDifficulty: Medium
A ladder leaning against a wall makes an angle of 60° with the ground and its foot is 3 m from the wall. Find the length of the ladder.
Original Khojo Papers practice question — not from a past board paper.
Answer
6 m
No citable source has been recorded for this record. Treat it as practice material, not as fact.
Explanation
cos 60° = 3 ÷ l, so l = 3 ÷ 0.5 = 6 m.
Related questions
From the same topic and chapter, at a similar level.
Same chapter1 markDifficulty: Medium
In a right-angled triangle with hypotenuse 10 cm and one angle 30°, the side opposite the 30° angle is:
Solution of Right Triangles
Same chapter3 marksDifficulty: Medium
In a right-angled triangle the hypotenuse is 20 cm and one acute angle is 30°. Find the two remaining sides.
Solution of Right Triangles
Same chapter3 marksDifficulty: Medium
A tree casts a shadow 15 m long when the angle of elevation of the sun is 45°. Find the height of the tree.
Solution of Right Triangles
Same chapter3 marksDifficulty: Medium
A pole is fixed vertically and a wire from its top is fastened to the ground 12 m from its foot, making an angle of 30° with the ground. Find the length of the wire.
Solution of Right Triangles
Same subject3 marksDifficulty: Medium
Factorise x4 − 81.
Factorisation