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Ա) 2x^2=2^2

x= √4/2=√2

OC=BC=√2; B(√2; √2)

Բ) B(-√2; √2)

Գ) B(√2; -√2)

Դ) <BOC=135*+90*=-45*; BO=2; BC=OC- √2; <BOC=-45; B(-√2; √-2)

Ա) 1^2-0.5^2=x^2=0.75; x= √3/2; B(0.5; √3/2)

Բ) B(√3/2; 0.5)

Գ) B(-0.5; √3/2)

Դ) B(-0.5; √3/2)

0, 0.5, √2/2, √0.75, 1, √0.75; √0.5; 0.5; 0

0, √0.75, √2/2, 0.5, 0, -0.5, -√0.5, -√0.75, -1

0, √1/3, 1, √3, X, -√3, -1, -√1/3, 0

0, √3, 1, √1/3, 0, -√1/3, -1, -√3, X

Ա) 9п/4=405*; sin405*=0.70

Բ) 19п/4=855*; cos855*=-0.7

Գ) 13п/6=390*; tg390*=0.57

Դ) tg(-570*)= -0.57

Ե) -11п/6=-330*; sin330*=0.5

Զ) cos810*=2.3274479·10^-15