Tan57°-tan12°-tan57°×tan12°
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Answer:
1.0001
Step-by-step explanation:
tan57= 1.5398
tan12=0.2125
tan57=1.5398
Now,
=1.5398- 0.2125 -1.5398* 0.2125
=1.5398- 0.2125 -0.3272
=1.0001
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