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Mathematics
18.04.2022 11:36
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How would i get the exact value of tan157.5 using the half angle formula?

How would i get the exact value of tan157.5 using the half angle formula?
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kennyg02
kennyg02
4,9(43 marks)
\tan(157.5)=\tan(315/2)=\frac{\sin(315)}{1+\cos(315)}=\frac{-\sqrt{2}/2}{1+\sqrt{2}/2}=\frac{-1}{1+\sqrt{2}}
julliette27
julliette27
4,9(63 marks)
Answer equal to 3 because 3+4 =8-5 equal 3

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