Study the histogram and answer the question given below.
The graph represents the number of students obtaining a percentage of marks in class X Board examination in 2018 in a school.
The number of students who have secured less than 60% marks is what per cent less than the number of students who have secured 80% marks and above?
If sec²α + 4 cos²α = 4 and 0° ≤ α ≤ 90º, then find the value of α.
If tan A = \( \frac{2.4}{0.7} \) what is the value of (50 cos A + 24 cot A)?
In a triangle ABC, points P and Q are on AB and AC, respectively, such that AP = 4 cm, PB = 6 cm, AQ = 5 cm and QC = 7.5 cm. If PQ = 6 cm, then find BC (in cm).
Ankita's weight is 20% less than that of her grandmother. The grandmother weighs 26 kg less than grandmother's husband, whose weight is 81 kg. If Ankita's brother is 8 kg heavier than Ankita, then what is the weight (in kg) of Ankita’s brother?
The length of the shadow of a vertical tower on level ground increases by 8.4 cm when the altitude of the sun changes from 45° to 30°. What is the height of the tower (in m)?
4.2(\(\sqrt{3}\) - 1)
8.4(\(\sqrt{3}\) + 3)
4.2(\(\sqrt{3}\) + 3)
4.2(\(\sqrt{3}\)+ 1)
The following pie charts show the number of students studying in different departments of an institution during 2019 and 2020. The total number of students was 2000 and 2400 respectively, I Academic year 2019 and 2020.
What is the ratio of Commerce and Computer Science students taken together in 2019 to Engineering and Medical students taken together in 2020?