NCERT 2022 | रेखाएँ एवं कोण - L5 | lines and angles | Class 9 गणित | Hindi Medium | Amit Sir | 6 PM

Show that the equation x^(2)-6xy+5y^(2)+10x-14y+9=0 represents a pair of lines. Find the acute angle between them. Also find the point of intersection of the lines.

For the straight line 4x + 3y - 6 = 0 and 5x + 12y + 9 = 0 , find the equation of the bisector of the obtuse angle between them.

(i) Find the value of 'p' so that the lines : l_(1) : (1 - x)/(3) = (7y -14)/(2p) = (z - 3)/(2) and l_(2) : (7 -7x)/(3p) = (y - 5)/(1) = (6 - z)/(5) are at right angles. Also, find the equations of the line passing through (3,2, -4) and parallel to line l_(1) . (ii) Find 'k' so that the lines : (x - 3)/(2) = (y + 1)/(3 ) = (z - 2)/(2k) and (x + 2)/(1) = (4 -y)/(k) = (z + 5)/(1) are perpendicular to each other.

The given pie Chart (angles are not as per chosen scale) presents the marks scored by Amit in five subjects. Maximum marks in each subject = 100 Total score of Amit = 450 दिया गया वृत्त-आरेख ( कोण किसी चयनित पैमाने के अनुसार नहीं हैं ) पांच विषयों में अमित के द्वारा प्राप्त किये गए अंकों को दर्शाता है | प्रत्येक विषय के अधिकतम अंक = 100 अमित का कुल प्राप्तांक =450 What is the difference between the marks scored by Amit in Hindi and Maths? अमित के द्वारा हिंदी और गणित में प्राप्त किये गए अंकों में क्या अंतर है?

In the given figure l and m are parallel lines and t is a transversal such that angle1=135^(@) find the measure of each one of the angels angle2,angle3,angle4,angle5,angle6,angle7. AND angle8

Some letters are given below in the first line and numbers are given below them in the second line. Numbers are the codes for the alphabets and vice-versa. Choose the correct number-code for the given set of alphabets. C W E A Z X J Y K L 5 9 5 7 4 8 1 0 2 6 J W X C L Z

Consider the marks, out of 100, obtained by 51 students of a class in a test, given in Table 14.9. M a r k s"N u m b e r o f S t u d e n t s"0-10 5 10-20 10 20-30 4 30-40 6 40-50 7 50-60 3 60-70 2 70-80 2 80-90 3 90-100 9Tot a l 51 Draw a freque

In a class of 50 students, 23 speak English, 15 speak Hindi and 18 speak Punjabi. 3 speak only English and Hindi, 6 speak only Hindi and Punjabi and 6 speak only English and Punjabi. If 9 speak only English, then how many speak all the three? (a) 1 (b) 2 (c) 3 (d) 5