Question
A man standing in a point C of a ground. He observes a
flying an aero-plane in the east at an angle of elevation of 30° and after 30 seconds, he observes the same aero-plane in the west at an angle of elevation of 60°. If the aero-plane flies all along in a straight line at a height of 480√3 m, then its speed in km/h is:Solution
From the following figure, 
AB = ED = 480√3 AE = BD In Δ ABC, tan 30 = AB/BC 1/√3 = 480 √3/BC BC = 480 × 3 = 1440 In Δ EDC, tan 60 = ED/DC √3 = 480 √3/DC
What is the objective of the Ministry of Culture and Indian Navy's MoU to revive the 2000-year-old 'stitched shipbuilding method'?
The recently released “Crime in India” report by the National Crime Records Bureau (NCRB) has brought to light the disconcerting issue of missing wo...
The Prime Minister has released the 15th installment of the Pradhan Mantri Kisan Samman Nidhi (PM-KISAN) scheme transferring an amount of _______ to m...
What is the total cost of the revival plan approved for Rashtriya Ispat Nigam Ltd. (RINL)?
Which of the following was a key topic discussed at the UK-India Strategic Dialogue in London?
Which scheme was launched to empower over 500 women representatives from Panchayati Raj institutions?
Which country has named the 'Biparjoy Cyclone' that arose in the Arabian Sea?
PM Modi launches single brand 'Bharat', which is related toÂ
Which country did India make its first - ever rupee payment for the purchase of crude oil from?
Which of the following statements is/are not true regarding the proposed changes/changes being done by the Monetary Policy Committee?
I.The Reser...
Relevant for Exams:
