Math, asked by shubham03891, 1 year ago

give me solution of question 7-(v)

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Answered by iHelper
5
Hello!

cot ( - 15π / 4 )

= - cot ( 15π / 4 )

= - cot ( 3 3 / 4 π )

= - cot ( 4π - 1 / 4 π )

= - cot ( - 1 / 4 π )

= cot ( 1 / 4 π )

= cot ( 1 / 4 × 180° )

= cot 45° = 1

Hence,
The required answer for the above question is 1

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