Calculation: tan45 ° and 2cos45 ° respectively=______ .
The original formula is 1 + 2 × 22 = 1 + 1 = 2
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- 1. 3795 minus 1130 equals 2665 165 times 23 equals 3795 2665 divided by 65 equals 41 to find the comprehensive formula:
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- 9. 7 () 2 divided by 7 to make the middle of quotient 0, what number to fill in
- 10. 7.9 divided by 6
- 11. Tan45 = 1, conversely, 1 equals tan45 degrees
- 12. A problem of tan45-cot15 tan45=1 cot15=tan75 The original formula = (tan45-tan75) / (1 + tan75) =(tan45-tan75)/(1+tan45tan75) =tan(45-75) =tan(-30) =-√3/3 How does the original formula = (tan45-tan75) / (1 + tan75) become the following one =(tan45-tan75)/(1+tan45tan75)
- 13. How much is 2sin60
- 14. What's the meaning of 3tan 30, 3cos 45 and 2Sin 60
- 15. 3tan30°-cot45°+2sin60°+cos60°=?
- 16. Simple calculation of 26.39 * 36 + 26.39 * 83-263.9 * 1.9
- 17. How much is 36 degrees 54 seconds + 143 degrees 6 seconds
- 18. Calculate the value of (2cos30 ° / 3) ^ 2003 · (3tan30 °) ^ 2004
- 19. 2cos30°-tan45°-(1−tan60°)2=______ .
- 20. 3tan30 radical 1-2tan60 + tan2 power 60 ° + tan45 times cos45