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📏 Shapes and measures
Arc length and sector area
📖 Worked example · same type, different numbers
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a⁄b
√
x²
x^
log
ln
∛
|x|
π
°
(
)
sin
cos
tan
sin⁻¹
cos⁻¹
tan⁻¹
7
8
9
⌫
AC
◀
4
5
6
×
÷
▶
1
2
3
+
−
=
0
.
×10ⁿ
Ans
,
%
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<
>
≤
≥
%
≈
eˣ
10ˣ
n!
∞
≠
±
Σ
∫
d/dx
ⁿCᵣ
ⁿPᵣ
→
[ ]
{ }
i
j
e
a b⁄c
∩
∪
′
∅
⊂
∈
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