find 3 sin square 20 degree minus 2 tan sqare 45 degree + 3 sin square 70 degree
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2 tan sq 45 degree is 2
now 3 sin sq 70 degree is cos sq (90-20) degrees.
therefore the answer is 1 +2 =3
now 3 sin sq 70 degree is cos sq (90-20) degrees.
therefore the answer is 1 +2 =3
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