Question

3sin theta=1 than the value ofcos theta

Answer 1

Given 3 sin theta =1

So; sin theta =1/3 = opp/ hyp

By Pythagoras theorem

AC^2= AB^2 +BC^2

3^2=1^2+BC^2

9 = 1+BC^2

BC^2 = 9-1

BC = √8

So cos theta = adj / hyp

= √8/3

Therefore cos theta =√8/3

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