evaluate: tan 69 degree + tan 66 degree (whole upon) 1 - tan 69 degree tan 66 degree
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it is maths question , than why are you putting it in Chinese
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tan(69)+tan(66)/1−tan(69)tan(66)
Evaluate tan(69)=2.60508906.
2.60508906+tan(66)/1−tan(69)tan(66)
Evaluate tan(66)=2.24603677.
2.60508906+2.24603677/1−tan(69)tan(66)
4.85112583/1−2.60508906X2.24603677
4.85112583/1− 5.85112583
4.85112583/−4.85112583
1/-1
-1
Evaluate tan(69)=2.60508906.
2.60508906+tan(66)/1−tan(69)tan(66)
Evaluate tan(66)=2.24603677.
2.60508906+2.24603677/1−tan(69)tan(66)
4.85112583/1−2.60508906X2.24603677
4.85112583/1− 5.85112583
4.85112583/−4.85112583
1/-1
-1
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