Math, asked by kuttubaby8329, 1 year ago

Sin 4A = cos (A- 20°) where 4A is an acute angle find the value of A

Answers

Answered by GauravGumber

86

Sin 4A=Cos(A-20)
Sin4A=Sin (90-A+20) (as Cos x= Sin (90-x)
So, 4A=70-A, 5A=70, A=14

Answered by vinitabhatt604

23

Answer:

Step-by-step explanation:

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