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LHS:sinA(1-2sin^2)/cosA(2cos^2-1) = sinA(sin^2A+cos^2A-2sin^2A) \cosA(2cos^2A-(sin^2A+cos^2A) =sinA(cos^2A-sin^2A)/cosA(cos^2A-sin^2A) =sinA/cosA =tanA =RHS Hence proved

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1 +2=

Posted by Hariom Singh 6 years, 1 month ago

CBSE > Class 10 > Mathematics

14 answers

Arun Kirar 6 years, 1 month ago

3 ???

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Abhi Mittal 6 years, 1 month ago

3????

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Harshita Sharma 6 years, 1 month ago

3 ???

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Pubg Gamer 6 years, 1 month ago

3 hota hoga kj 2 ma pada tha

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Aadya Singh 6 years, 1 month ago

?????I think 12 is right..

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Sakthi Vasanth 6 years, 1 month ago

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♛ ❝Ѕυнαɴα❞ ♛ 6 years, 1 month ago

?????too much difficult...

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Abc Abc 6 years, 1 month ago

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Ripunjay Talukdar 6 years, 1 month ago

12 lmao ?

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Naman Chauhan 6 years, 1 month ago

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Radhu Duggal 6 years, 1 month ago

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Naruto Uzumaki??? 6 years, 1 month ago

1+2=3 Is this even a question,? you are 10th bro... mature already?

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Class 12 6 years, 1 month ago

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Chanchal Sharma 6 years, 1 month ago

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How many zeros there are in 10 lakh crores ¿¿

Posted by Class 12 6 years, 1 month ago

CBSE > Class 10 > Mathematics

8 answers

Class 12 6 years, 1 month ago

Abe kameene mein behn hoon

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Sahil Negi 6 years, 1 month ago

Aabe saale black heart kisne tuje itna hurt kiya jo itna likh diya.just chill bro??(^^)

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Abhi Mittal 6 years, 1 month ago

13 zeros

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Aadya Singh 6 years, 1 month ago

Sorry ???? I thought 10 lakh ???

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Aadya Singh 6 years, 1 month ago

Six dude ?

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Radhu Duggal 6 years, 1 month ago

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Class 12 6 years, 1 month ago

Oh my god???

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Naruto Uzumaki??? 6 years, 1 month ago

The Indian numbering system is used in the Indian subcontinent to express large numbers. The terms lakh (100,000) and crore (10,000,000)[1] are the most commonly used terms (even in English, such as in a local variety called Indian English) to express large numbers in the system. For example, 150,000 rupees in India is referred to as "1.5 lakh rupees", which is written as 1,50,000 rupees; 30,000,000 (thirty million) rupees is referred to as "3 crore rupees", which is written as 3,00,00,000 rupees with commas at the thousand, lakh, and crore places. There are words for numbers larger than 1 crore as well, but these are not commonly used and are unfamiliar to most speakers. These include 1 arab (equal to 100 crore or 1 billion), 1 kharab (equal to 100 arab or 100 billion), 1 nil (sometimes incorrectly transliterated as neel; equal to 100 kharab or 10 trillion), 1 padma (equal to 100 nil or 1 quadrillion), 1 shankh (equal to 100 padma or 100 quadrillion), and 1 mahashankh (equal to 100 shankh or 10 quintillion). In common parlance, the thousand, lakh, and crore terminology (though inconsistent) repeats for larger numbers: thus 1,000,000,000,000 (one trillion) becomes 1 lakh crore, written as 1,00,000,00,00,000. The Indian numbering system corresponds to the Western system for the zeroth through fourth powers of ten: one (100), ten (101), one hundred (102), one thousand (103), ten thousand (104). For higher powers of ten, the names no longer correspond. In the Indian system, the next powers of ten are called one lakh, ten lakh, one crore, ten crore, one arab (or one hundred crore), and so on; there are new words for every second power of ten (105 + 2n): lakh (105), crore (107), arab (109), etc. In the Western system, the next powers of ten are called one hundred thousand, one million, ten million, one hundred million, one billion, and so on; there are new words for every third power of ten (103n): million (106), billion (109), trillion (1012), etc. The written numbers differ only in the placement of commas, which group the digits into powers of one hundred in the Indian system (except for the first thousand), and into powers of one thousand in the Western system. The Indian and most English systems both use the decimal point and the comma digit-separator, while some other languages and/or countries using the Western numbering system use the decimal comma and the thin space or point to group digits.

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What is point of contact

Posted by Bindu Saji 6 years, 1 month ago

CBSE > Class 10 > Mathematics