Mathematics, 06.02.2021 18:40 tmoneytj28
Suppose aa represents some number of radians where 0<a<π/2, and cos(a)=0.7 and sin(a)=0.72. Determine the values of the following expressions.
cos(−a)=
sin(−a)=
Hint: it might help to start by drawing a diagram of two angles: one with a measure of a radians, and one with a measure of −a radians.
Answers: 1
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Suppose aa represents some number of radians where 0<a<π/2, and cos(a)=0.7 and sin(a)=0.72. De...
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