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Kritika Trehan 8 years, 1 month ago
{tex}\begin{array}{l}The\;reciprocal\;identities\;are\;given\;as:\;\;\\Cosec\Theta=1/\sin\Theta\;\;\\sec\Theta=1/\cos\Theta\;\;\\cot\Theta=1/\tan\Theta\;\;\\\sin\Theta=1/Cosec\Theta\;\;\\\cos\Theta=1/sec\Theta\;\;\\\tan\Theta=1/cot\Theta\\\end{array}{/tex}
Posted by Shruti Garg 8 years, 1 month ago
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Kritika Trehan 8 years, 1 month ago
The "mean" is the "average" you're used to, where you add up all the numbers and then divide by the number of numbers.
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Kritika Trehan 8 years, 1 month ago
{tex}\begin{array}{l}\sin\;x\;=\frac{\sqrt3}2\\we\;know\;that\;\sin\;60^0\;=\;\frac{\sqrt3}2\\\sin\;is\;positive\;in\;first\;anf\;second\;quadrant\\value\;in\;Ist\;quadrant\;=\;60^0\\value\;in\;2nd\;quadrant\;=\;180\;-\;60\;=\;120^0\\\\\\\\\end{array}{/tex}
Posted by Shobha Sharma 8 years, 1 month ago
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Varun Banda 8 years, 1 month ago
A sequence such as 1, 5, 9, 13, 17 or 12, 7, 2, –3, –8, –13, –18 which has a constant difference between terms. The first term is a1, the common difference is d, and the number of terms is n.
Explicit Formula: an = a1 + (n – 1)d.
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Mahima Sharma 8 years, 1 month ago
1Thank You