Exact value of tan200(cot 10 – tan 10) is (all angles are in degree)
himani , 6 Years ago
Grade 12
Trigonometry> Exact value of tan200(cot 10 – tan 10) is...
1 Answers
Samuel Garry
Last Activity: 6 Years ago
Tan 200 = tan (180 - 20) = tan 20
Tan 20( cot 10 - tan 10) => tan20((1-tan210)/tan 10)
2tan 10/1-tan2 10 (1-tan2 10)/tan 10) = 2. Tan 2x= 2 tan a/ 1 - tan2 a
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