1) sin45°+cos45°=√2/2+√2/2=(√2+√2)/2=(2√2)/2=√2; 2) cos60°+sin30°=1/2+1/2=0,5+0,5=1; 3) tg45°*tg60°=1*√3=√3.
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1) sin45°+cos45°=√2/2+√2/2=(√2+√2)/2=(2√2)/2=√2; 2) cos60°+sin30°=1/2+1/2=0,5+0,5=1; 3) tg45°*tg60°=1*√3=√3.