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Formula.
1 - tan²A is equal to Cos 2A
1 + tan²A
than,
Cos2x30 = Cos 60 = 1/2
simple..
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Answer:
Babur, born Zahīr ud-Dīn Muhammad, was the founder of the Mughal Empire and first Emperor of the Mughal dynasty in the Indian subcontinent. He was a descendant of Timur and Genghis Khan through his father and mother respectively
Babur was invited by Daulat Khan Lodi, a rebel of the Lodi dynasty, in 1524, to invade North India and fight the dynasty and their enemies in Rajputana. Rajputana was ruled by a Hindu Rajput confederacy, led by Mewar king Rana Sanga. 5. In 1526, Babur won the Battle of Panipat against Ibrahim Lodi, the Lodi king.
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