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= 180 - 150
= 30
sin P = depan / miring
sin 30 = QS / PQ
1/2 = QS / (√6 + √2)
QS = (√6 + √2) / 2
sin 105 = sin (180 - 75) = sin 75 = (√6 + √2)/4
sin 75 = QS / QR
(√6 + √2)/4 = ((√6 + √2) / 2) / QR
QR = 2
RS² = QR² + QS²
RS² = 2² - ((√6 + √2) / 2)²
RS² = 4 - (2 + √3)
RS² = 2 - √3
RS = √(2 - √3)
PS² = ((√6 + √2))² - ((√6 + √2) / 2)²
PS² = 6 + 3√3
PS = √(6 + 3√3)
PR = PS - RS
PR = √(6 + 3√3) - √(2 - √3)