Math, asked by jatinkinra, 6 months ago

evaluate sin18/cos72 + root3 (tan10 tan30 tan40 tan50 tan80)​

Answers

Answered by SajanJeevika
1

Sin 18°/cos 72° + √3 [tan10 tan 30 tan 40 tan 50 tan 80]

=Sin 18°/cos(90-72) + √3 [tan10 tan 30 tan 40 tan(90-50) tan(90-80)]

=Sin 18°/Sin 18 + √3 [tan10 tan 30 tan 40 cot40 cot10]

=1 + √3 [tan10 tan 30 tan 40 1/tan40 1/tan10]

=1 + √3 [tan 30]

=1 + √3 [1/√3]

=1 + 1 = 2

Answered by himeshrathod2008
1

defeat the shortcut 2...........

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