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If sec 4A = cosec (A – 20°), where 4A is an acute angle, find the value of A.
05
Oct
If sec 4A = cosec (A – 20°), where 4A is an acute angle, find the value of A. find the value of A. If sec 4A = cosec (A – 20°) where 4A is an acute angle October 5, 2020 Category: Chapter 8 - Introduction to Trigonometry , Maths , NCERT Class 10 ,
If tan A = cot B, prove that A + B = 90°
05
Oct
If tan A = cot B, prove that A + B = 90° If tan A = cot B prove that A + B = 90° October 5, 2020 Category: Chapter 8 - Introduction to Trigonometry , Maths , NCERT Class 10 ,
If tan 2A = cot (A – 18°), where 2A is an acute angle, find the value of A.
05
Oct
If tan 2A = cot (A – 18°), where 2A is an acute angle, find the value of A. find the value of A. If tan 2A = cot (A – 18°) where 2A is an acute angle October 5, 2020 Category: Chapter 8 - Introduction to Trigonometry , Maths , NCERT Class 10 ,
Show that : (ii) cos 38° cos 52° – sin 38° sin 52° = 0
05
Oct
Show that : (ii) cos 38° cos 52° – sin 38° sin 52° = 0 Show that : (ii) cos 38° cos 52° – sin 38° sin 52° = 0 October 5, 2020 Category: Chapter 8 - Introduction to Trigonometry , Maths , NCERT Class 10 ,
A ray of light travels from a light source S to an observer after reflection from a plane mirror. If the source rotates in the clockwise direction by 10, by what angle and in what direction
05
Oct
A ray of light travels from a light source S to an observer after reflection from a plane mirror. If the source rotates in the clockwise direction by 10, by what angle and in what direction A ray of light travels from a light source S to an observer after reflection from a plane mirror. [...]
Show that : (i) tan 48° tan 23° tan 42° tan 67° = 1
05
Oct
Show that : (i) tan 48° tan 23° tan 42° tan 67° = 1 Show that : (i) tan 48° tan 23° tan 42° tan 67° = 1 October 5, 2020 Category: Chapter 8 - Introduction to Trigonometry , Maths , NCERT Class 10 ,
Evaluate : (iv) cosec 31° – sec 59°
05
Oct
Evaluate : (iv) cosec 31° – sec 59° Evaluate : (iv) cosec 31° – sec 59° October 5, 2020 Category: Chapter 8 - Introduction to Trigonometry , Maths , NCERT Class 10 ,
Two plane mirrors are placed parallel to each other. The distance between the mirror is 10 cm. An object is placed between the mirrors at a distance of 4 cm from one of them, say M1.
05
Oct
Two plane mirrors are placed parallel to each other. The distance between the mirror is 10 cm. An object is placed between the mirrors at a distance of 4 cm from one of them, say M1. say M1. Two plane mirrors are placed parallel to each other. The distance between the mirror is 10 cm. [...]
Evaluate : (iii) cos 48° – sin 42°
05
Oct
Evaluate : (iii) cos 48° – sin 42° Evaluate : (iii) cos 48° – sin 42° October 5, 2020 Category: Chapter 8 - Introduction to Trigonometry , Maths , NCERT Class 10 ,
There is a point and a plane mirror. If the mirror is moved by 10 cm away from the object, find the distance which the image will move.
05
Oct
There is a point and a plane mirror. If the mirror is moved by 10 cm away from the object, find the distance which the image will move. find the distance which the image will move. There is a point and a plane mirror. If the mirror is moved by 10 cm away from the [...]