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A vertical tower stands on a horizontal plane and is surmounted by a vertical flag staff of height h. At a point on the plane, the angles of elevation of the bottom and the top of the flag staff are α and β , respectively. Prove that the height of the tower is ( h tanα /tanβ−tanα)
25
Nov
A vertical tower stands on a horizontal plane and is surmounted by a vertical flag staff of height h. At a point on the plane, the angles of elevation of the bottom and the top of the flag staff are α and β , respectively. Prove that the height of the tower is ( h [...]
The shadow of a tower standing on a level plane is found to be 50 m longer when Sun’s elevation is 30° than when it is 60°. Find the height of the tower.
25
Nov
The shadow of a tower standing on a level plane is found to be 50 m longer when Sun’s elevation is 30° than when it is 60°. Find the height of the tower. The shadow of a tower standing on a level plane is found to be 50 m longer when Sun’s elevation is 30° [...]
The angle of elevation of the top of a tower from two points distant s and f from its foot are complementary. Prove that the height of the tower is √st.
25
Nov
The angle of elevation of the top of a tower from two points distant s and f from its foot are complementary. Prove that the height of the tower is √st. The angle of elevation of the top of a tower from two points distant s and f from its foot are complementary. Prove that [...]
Given that sinθ + 2cosθ = 1, then prove that 2sinθ – cosθ = 2.
25
Nov
Given that sinθ + 2cosθ = 1, then prove that 2sinθ – cosθ = 2. Given that sinθ + 2cosθ = 1 then prove that 2sinθ – cosθ = 2. November 25, 2020 Category: Chapter 8 - Introduction to Trigonometry , Maths , NCERT Class 10 ,
Which of the following is isolated in pure form (a) HClO4 (b) HClO3 (c) HClO2 (d) HClO
25
Nov
Which of the following is isolated in pure form (a) HClO4 (b) HClO3 (c) HClO2 (d) HClO Which of the following is isolated in pure form (a) HClO4 (b) HClO3 (c) HClO2 (d) HClO November 25, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) ,
If 1 + sin^2θ = 3sinθ cosθ, then prove that tanθ = 1 or 1/2 .
25
Nov
If 1 + sin^2θ = 3sinθ cosθ, then prove that tanθ = 1 or 1/2 . If 1 + sin^2θ = 3sinθ cosθ then prove that tanθ = 1 or 1/2 . November 25, 2020 Category: Chapter 8 - Introduction to Trigonometry , Maths , NCERT Class 10 ,
When Cl2 gas is passed through hot and conc. solution of KOH, following compound is formed (a) KCl (b) KClO3 (c) KClO2
25
Nov
When Cl2 gas is passed through hot and conc. solution of KOH, following compound is formed (a) KCl (b) KClO3 (c) KClO2 following compound is formed (a) KCl (b) KClO3 (c) KClO2 When Cl2 gas is passed through hot and conc. solution of KOH November 25, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma [...]
The angle of elevation of the top of a tower from certain point is 30°. If the observer moves 20 metres towards the tower, the angle of elevation of the top increases by 15°. Find the height of the tower.
25
Nov
The angle of elevation of the top of a tower from certain point is 30°. If the observer moves 20 metres towards the tower, the angle of elevation of the top increases by 15°. Find the height of the tower. the angle of elevation of the top increases by 15°. Find the height of the [...]
On heating NaCl + K2Cr2O7 + Conc. H2SO4, the gas comes out is (a) O2 (b) Cl2 (c) CrOCl2
25
Nov
On heating NaCl + K2Cr2O7 + Conc. H2SO4, the gas comes out is (a) O2 (b) Cl2 (c) CrOCl2 On heating NaCl + K2Cr2O7 + Conc. H2SO4 the gas comes out is (a) O2 (b) Cl2 (c) CrOCl2 November 25, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) ,
Prove that sec^2θ + cosec^2θ−−√ = tanθ + cot θ
25
Nov
Prove that sec^2θ + cosec^2θ−−√ = tanθ + cot θ Prove that sec^2θ + cosec^2θ−−√ = tanθ + cot θ November 25, 2020 Category: Chapter 8 - Introduction to Trigonometry , Maths , NCERT Class 10 ,