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Value of Standard Angle(30,60,90)

If sec 4 A= c...

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If sec 4 A= cosec (A-20 degree ) and A<90 degree, then A is equal to

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s e c 5 A^{\circ} = c o s e c (A - 30)^{\circ}

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If sec 5A = cosec(A - $30^{\circ}$ ) and A is an acute angle, then find the value of A in degrees.

If sec 5A = cosec(A - $30^{\circ}$ ) and 5A is acute angle then find the value of A in degrees.

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