yadi sec4a =cosec(A-20°), jahan 4a ek nyun kond hai
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cosec (90 - 4A ) = cosec ( A - 20)
90 - 4A = A - 20
90 + 20 = 4A + A
110 = 5A
A = 110/5
A = 22°
Hence 4A = 4 × 22 = 88°
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90 - 4A = A - 20
90 + 20 = 4A + A
110 = 5A
A = 110/5
A = 22°
Hence 4A = 4 × 22 = 88°
Hope you like it please mark as brainliest.
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