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Tan70 = 2 tan50+tan20 |
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Answer» Step-by-step explanation: TAN70 = tan(50+20) tan70= tan50+tan20/1-tan50.tan20 tan70-tan70.tan50.tan20= tan50+tan20 -EQ(1) tan70=tan(90-20)= cot20= 1/tan20 Substitute tan70 in eq(1) tan70-tan50= tan50+tan20 tan70=2tan50+tan20 HOPE IT HELPS :) |
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