4 Prime number on found jump What will be the probability of getting? C) The height of a tower is 20 meters. on the ground Length of its shadow formed 20/3 meters. Known angle of elevation of sun Please do. In the bag D) Figures 10, 13, 17, 19, 12, 15, 19, Find the multiple of 17. .

The height of a tower is 20 m. Length of its shadow formed on the ground Is 20 sqrt3 m. Find the angle of elevation of Sun.

A tree casts a shadow 4m long on the ground,when the angle of elevation of the sun is 45^@ .The height of the tree (in meters) is a)4 b)3 c)5.2 d)4.5

The angle of elevation of the top of a tower from a certain point is 30o . If the observer moves 20 m towards the tower, the angle of elevation of the top of the tower increases by 15o . The height of the tower is (a) 17.3 m (b) 21.9 m (c) 27.3 m (d) 30 m

The Government of India is planning to fix a hoarding board at the face of a building on the road of a busy market for awareness on COVID-19 protocol. Ram, Robert and Rahim are the three engineers who are working on this project. “A” is considered to be a person viewing the hoarding board 20 metres away from the building, standing at the edge of a pathway nearby. Ram, Robert and Rahim suggested to the firm to place the hoarding board at three different locations namely C, D and E. “C” is at the height of 10 metres from the ground level. For the viewer A, the angle of elevation of “D” is double the angle of elevation of “C” The angle of elevation of “E” is triple the angle of elevation of “C” for the same viewer. Look at the figure given and based on the above information answer the following: A^(1) Is another viewer standing on the same line of observation across the road. If the width of the road is 5 meters, then the difference between /_CAB and /_CA'B Is

A two-digit number is to be formed from the digits 0,1,2,3. Repetition of the digits is not allowed. Complete the following activity to find the probability that th enumber so formed is (1) a prime number (2) a multiple of 4. The sample space S = { 10,12,13,20,21,23,30,31,32} :. n (S) = 9 ( 1) Let A be the event that the number so formed is a prime number. Then A = { " "}, n (A) = square P(A) = ( n(A))/( n (S)) =" ______"= "______" (2) Let B be the event that the number so formed is a multiple of 4. Then B ={" "}, n (B) = square P (B) = ( n (B))/( n (S))="______"=" ________"

If angle of elevation of top B of a tower AB from a point P on the ground 15 meter away from the foot is 60^(@) , find the height of the tower. Also find the angle of depression of top D of a 10sqrt(3) meter flag staff CD which is at a distance of 5 meter from the tower.

A boy standing on the top of a tower 20 metrés height, saw the top of a building at an elevation of 50^circ and its base at a depression of 30^circ a) Draw a rough figure. according to the given data. b) find the distance between the tower and the building. c) find the distance from the top of the tower to the base of the building. d) find the height of the building. [sin 50^circ =0.77, cos 50^circ =0.64, tan 50^circ =1.2, 'sqrt3 =1.7]

For Question 19-20 use the figure above A lamp shade with a circular base is an example of a solid shape called a frustrum. In the figure above, the shaded region represents a frustrum of a right cone in which the portion of the original cone that lies 12 inches below its vertex has been cut off by slicing plane (not shown) parallel to the base. Q. If the height and slant height of the frustrum are 8 inches and 10 inches, respectively, what is the number of inches in the radius length, R, of the original cone?

A student was asked to find the arithmetic mean of the numbers 3,11,7,9,15,13,8,19,17,21,14 and x. He found the mean to be 12. What should be the number in place of x?(a)3(b)7(c)17 (d) 31