if sec 4A=cosec(A - 20) where 4A is a measure of acute angle then the value of A is...
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Answer is A= 22°.....
sec A = cosecB ,,when A+B=90°
therefore
4A+ A-20° = 90°
by solving. A =22°
sec A = cosecB ,,when A+B=90°
therefore
4A+ A-20° = 90°
by solving. A =22°
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how it came
Answered by
3
A =22 as sec= 90-A. rest check in the picture
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