sin squre( 120+x)+ cos squre x+ cos square (120-x)=
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sin sq. (120+x) + cos square +cos square(120+x) =
Step-by-step explanation:
(sin sq. + cos sq. )(120+x) [since (sin sq.cos sq.=1]
1 × 120 + x
Thus,
answer is = 120+x
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