If sec4A = cosec(A-20),where 4A is an acute angle,find the value of A.
drushasangwan:
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Cosec(90-4a) = cosec(a-20)
Cosec get cancels on both sides,
90-4a = a-20
90+20= a+4a
110 = 5a
a= 110/5
a= 22
The value of a is22
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Answered by
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Sec4A = cosec (A-20)°
sec4A = sec{90-(A-20)}° |°•° Sec4A= cosec (90-A)°
4A = (90-A+20)°
4A+A = 110°
5A = 110°
A = 22°
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