Question
A vertical flagstaff stands on a horizontal plane. From
a point distant 210 metres from its foot, the angle of elevation of its top is found to be 30°. Find the height of the flagstaff.Solution
tan 30° = H/210 1/ 1/√3 = H/210 H = 210/ √3 × √3/√3 = √3 × 210/3 = 70√3 m Â
Which of the following is a valid page orientation in MS-Word 2019?
(i) Landscape (ii) Portrait
Which number system is used by computers to store data and perform operations?
Dial-up modems have a data transfer speed of up to ______.Â
What is the absolute address of the cell at the intersection of fifth row and fifth column?
The Uttar Pradesh government has hiked dearness allowance (DA) for its employees and dearness relief to its pensioners by _____ from January 1, 2023.
The pathway for transferring instructions between the processor and memory is _______. Â
When a transaction completes successfully and its effects are permanently recorded in the database, it is said to be:
Which of the following is an example of non-volatile memory? Â
What device is used to connect computers to telephone lines for communication?
Which of the following operating systems is open-source and not owned by any specific company?
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