1-cosθ |
sinθ |
1+cosθ |
sinθ |
1-cosθ |
sinθ |
1+cosθ |
sinθ |
1-cos2θ |
sin2θ |
1 |
2 |
A.0°<∠A<30° | B.30°<∠A<90° | C.0°<∠A<60° | D.60°<∠A<90° |
A.m=n | B.m=2n+1 | C.m2=2n+1 | D.m2=1-2n |
A.tan48°+
| B.sin48°+cos48° | ||
C.tan48°+cos48° | D.
|
A.c=bsinB | B.a=btanA | C.b=csinB | D.b=acotA |
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