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Whats sine of 35 Degrees= Opposite/Hypotenuse =2.8/4.9 =0.57 |
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4, reciprical identities, even/odd, quotient, pythagorem therom, |
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sin(theta)= 1/cos(theta), etc. |
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Cos(-Theta)=cos(Theta)<-- cos,sec are even Sin(-Theta)= -sin(Theta)<-- sin,csc,tan Tan(-Theta) = -tan(Theta)<-- cot, are odd |
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Tan(Theta)= sin(Theta)/cos(Theta) Cot(Theta)= cos(Theta)/sin(Theta) |
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Pythagorem Theorm Identity |
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Sin^2(Theta)+cos^2(Theta)=1 Tan^2(Theta)+1=sec^2(Theta) 1 + cot^2(Theta) = csc^2(Theta) |
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always acute except for right angles,anyh angle (Theta) can be compared with an acute(or right) reference angle (theta Prime) |
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acute angle between theta and x-axis |
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