BackFind values of the sine and cosine functions for each angle measure.
B, given cos 2B = 1/8 , 540° < 2B < 720°
Find values of the sine and cosine functions for each angle measure.
2y, given sec y = -5/3, sin y > 0
Use the given information to find each of the following.
sin A/2, given cos A/2 = - 3, 90° < A < 180°
Use the given information to find each of the following.
sin y, given cos 2y = -1/3 , π/2 < y < π
Use the given information to find each of the following.
sin 2x, given sin x = 0.6, π/2 < y < π
Graph each expression and use the graph to make a conjecture, predicting what might be an identity. Then verify your conjecture algebraically.
(1 - cos 2x)/sin 2x
Graph each expression and use the graph to make a conjecture, predicting what might be an identity. Then verify your conjecture algebraically.
(cos x sin 2x)/1 + cos 2x)
Graph each expression and use the graph to make a conjecture, predicting what might be an identity. Then verify your conjecture algebraically.
csc x - cot x
Determine whether the positive or negative square root should be selected.
cos 58° = ±√ (1 + cos 116°)/2]
Determine whether the positive or negative square root should be selected.
sin (-10°) = ± √[(1 - cos (-20°))/2]