InterviewSolution
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InterviewSolution
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cosec(4a)=sec(a-20) find the value of a. |
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Answer» Cosec(4A)=Sec(A-20)Cosec(4A)=Sec{90-(A-20)}Cosec(4A)=Cosec(90-A+20)Cosec(4A)=Cosec(110-A) 4A=110-A 5A=110 A=22 Solved.... cosec(4a)=sec(a-20)sec(90-4a)=sec(a-20)90-4a=a-20-4a-a=-20-90-5a=-110a=22 A=22 Cosec (4a) = cosec (90-(a- 20))......... Cosec (4a) = cosec (110 - a)......... (4a) = 110-a...... 5a=110..... a= 22...... Hope it will help u.... 22 |
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