Question
In ∆ABC, AB = 5cm, BC = 6cm and AC = 10cm then find
out the value of cos A?Solution
cos A = (b2+c2 - a2)/2bc = (102+52-62)/(2×10×5) = 89/100
B goes for practical exam on which of the following days?
Seven persons, Shikha, Garima, Nidhi, Pooja, Manisha, Neena and Anu, lives in a 7-storey building, but not necessarily in the same order. The bottommost...
Seven boxes L, M, N, O, P, Q and R are kept one above another such that bottommost box is numbered as 1 while the topmost as 7. Box O is prime numbered...
Read the direction carefully and answer the following question.
Six students A, B, C, D, E and F are sitting in the field. A and B are from Neh...
Four of the following five are alike in a certain way and thus form a group. Find the one which does not belong to that group?
How many persons are junior to F?
Which of the following is the birth month - year of O?
Who among the following person participates on August 17?
Who among the following persons attend the marriage on odd numbered date?
Who among the following live immediate below N?
Relevant for Exams:
