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If 4tan theta =3 then (cos²-sin² theta). =? |
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Answer» Tan theta = 3/4 thenP=3kB=4kH=5k ( Pythagoras)Cos² - sin²= (4/5)² - (3/5)²= 16/25 - 9/25= 7/25 Therefore we can say that when tan theta =34,cos 2 theta -sin 2 theta =725 |
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