Question
If p cos A = 2q sin A and 2p cosec A – q sec A = 3,
then the value of p² + 4q² is:Solution
p cosA = 2q sinA tanA = p/2q Also, 2p cosecA - q secA = 3 2p/sinA - q/cosA = 3 Multiply by sinA cosA:Â 2p cosA - q sinA = 3sin A cosA Substitute p cosA = 2q sinA, we get So, 3q sinA = 6q sin2A/p 3p sinA = 6sin2A p = 2sinA Now from p cosA = 2q sinA 2sinA . cos A = 2q sinA cosA = p/2, cos A = q (p/2)2 + q2 = 1 p2/4 + q2 = 1 Multiply by 4, p2 + 4q2 = 4
A loan is categorised as NPA when its interest or principal repayment become overdue for more than 180 days
Which number will come at the end of the number series?
85, 77, 70, 64, 59, 55, _____?
From which state does the distinguished tennis player Rohan Bopanna, who recently retired, originate?
P-Notes are instruments issued by registered FII to overseas investors, who wish to invest in the Indian stock markets without registering themselves w...
Which of the following cities is not situated at the river bank of the Ganges?
In which year were the Operation Shakti nuclear tests conducted by India?
The Government of India launched the PRASAD (Pilgrimage Rejuvenation And Spiritual Augmentation Drive) scheme in the year ____ under the Ministry of Tou...
In which of the following years, progressive liberalisation of the Indian economy was first initiated?Â
Which of the following is correct?
The largest state of the country India is?
Relevant for Exams:
