Simplify and find '?'
48?+32? = 320
given
48?+32?= 320
=> 6?+4?=40
Now squaring on both sides
=> 36 x ? + 16 x ? + 48 x ? = 1600
=> 100 x ? = 1600
=> ? = 16
If X + Y = 19 and X - Y = 7, then XY = ?
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Cosec (90 - θ)
22 - 33 + 43 - 62 = ?
Cos2 90° + Cosec2 90° - Cot2 45° = ?
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