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How many of the following trigonometric ratios are correct? (1)Sin (15∘) = √3+12√2 (2)Cos (105∘) = 1−√32√2 (3)Sin 75∘ = √3−12√2 (4)Tan 15∘ = 2−√3 __

Answer»

How many of the following trigonometric ratios are correct?

(1)Sin (15∘) = √3+12√2

(2)Cos (105∘) = 1−√32√2

(3)Sin 75∘ = √3−12√2

(4)Tan 15∘ = 2−√3


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