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Who can teach me how to press the math calculator in technical secondary school 2、 137.53 ≈ (accurate to 0.0001) 19 π / 3 π ≈ (accurate to 1) - 17 π / 8 ≈ (accurate to 1) sin (- 852 ° 17 ') ≈ (accurate to 0.0001) cos1604 ° 12' 33 '≈ (accurate to 0.0001) 6.28 ≈ (accurate to 1) 97.5 ° ≈ (accurate to 0.0001) Tan 796 ° 43' ≈ (accurate to 0.0001) arc Tan 0.3415 ≈ (accurate to 1)
137·53≈ 137.5300 19π∕3π=19/3=6.3333=6 -17π∕8≈-17*3.1/8=-6.58=-7
sin(-852.28°）≈-sin852.28°=-0.73987=-0.7399
COS1604.209°=-0.96226=-0.96236.28=6
97.5°=97.5000°
tan796°43’=tan796.7167°=4.2358
arc tan 0.3415=18.9=19
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