how to find value of sin 57 without using any calculator/???
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finding sin 57° without knowing trigonometric identities and advanced formulas is difficult.
graphically or by drawing?
Draw a right angle triangle with angles B = 90°, A = 57° and C = 33°. Use the geometry box tools to draw the triangle. Take AB = 4 cm for example, draw that horizontally. Then draw BC vertically above AB and perpendicular to AB at B. Then at point A draw a line at angle 57° cutting BC.
Now sin 57° = BC / AC ... find that by measuing BC and AC.
graphically or by drawing?
Draw a right angle triangle with angles B = 90°, A = 57° and C = 33°. Use the geometry box tools to draw the triangle. Take AB = 4 cm for example, draw that horizontally. Then draw BC vertically above AB and perpendicular to AB at B. Then at point A draw a line at angle 57° cutting BC.
Now sin 57° = BC / AC ... find that by measuing BC and AC.
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