Ex 2.2, 2 - Chapter 2 Class 12 Inverse Trigonometric Functions
Last updated at Dec. 16, 2024 by Teachoo
Last updated at Dec. 16, 2024 by Teachoo
Ex 2.2, 2 3cosโ1 ๐ฅ = cosโ1 (4๐ฅ^3โ 3๐ฅ ), ๐ฅโ [1/2,1] Solving R.H.S cos^(โ1) (4๐ฅ^3โ 3๐ฅ ) Putting x = cos ๐ = cos^(โ1) (4 ใ"cos" ใ^๐๐ โ 3cos ๐) = cos^(โ1) (cos 3๐) = 3๐ = 3 cos^(โ1) x = L.H.S Hence, proved.
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