find the value of tan21degree tan30degree tan69degree
Answers
Answered by
1
tan21°*tan69°*tan30
=tan21°*cot(90°-69°)*1/over root3 [tan30° =1/over root 3]
=tan21°*cot21°*1/over root 3
=tan21°*(1/tan21°)*1/over root 3 [cot theta= 1/ tan theta]
=1*1*1/over root 3
=1/over root 3
Similar questions