Page 14 - Trigonometry

2
2
sin ( ) = √1 − cos ( ) = √ 1 − ( )
2 2
The length x is,

2

√
2
2
= 1 − ( ) = √ − 3

From Eq:2,
−1
= cos ( ) 4
2
The top side has a length of,

( − ) +
2

2
2
= − √ − + cos −1 ( )

The perimeter of the pattern is therefore,

2
2
= 2 { + − √ − + cos −1 ( )}

The keystrokes for your fx calculator to perform the
calculation are,

C2(Q(E)+Q(A)psQ(F)dp

J(E)d$+J(F)q>J(E)aJ(F)
$))

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