Calculation: 27 degrees, 42 minutes, 30 seconds + 1070 minutes; 63 degrees, 36 minutes - 36.36 degrees, hurry, if correct, add 50, hurry

RELATED INFORMATIONS

• 1. Known: as shown in the figure, in the plane rectangular coordinate system xoy, the side length of square ABCD is 4, its vertex a moves on the positive half axis of X axis, and vertex D moves on the Y axis (points a and d do not coincide with the origin), B and C are in the first quadrant, diagonal AC and BD intersect at point P, connecting Op Q: when OA
• 2. In the plane rectangular coordinate system, the coordinates of vertex B and D in square ABCD are (0,0), (2,0) respectively, and a and C are symmetric about X axis Finding the coordinates of two points a and C (using different methods)
• 3. The vertex B and C of square ABCD are on the positive half axis of X axis, and a and D are on the parabola y = - 2 / 3x & # 178; + 8 / 3x
• 4. The side length of the square ABCD is a. place a vertex of the square omnp large enough on the symmetric center O of the square ABCD The side length of square ABCD is a Operation and calculation: place a vertex of the square omnp large enough on the symmetric center O of the square ABCD, and OM ⊥ BC, Op ⊥ DC. Try to find the area of the quadrilateral OECF of the overlapping part of two squares Thinking and exploration: if the square omnp is rotated at any angle around point O, is be equal to CF? Why? Can we find the area of quadrilateral OECF? What do you find?
• 5. As shown in the picture, two pieces of paper of equal width are crossed and overlapped. Is the overlapped part ABCD a diamond? Please prove it
• 6. As shown in the figure, two pieces of paper of equal width are crossed and overlapped, and the quadrilateral ABCD of the overlapped part is______ Shape
• 7. As shown in the figure, is the quadrilateral ABCD obtained by superposition of two rectangles of equal width a diamond? Prove your conclusion An engineering team is planning to repair BM every day. Due to weather, cm (C
• 8. As shown in the figure, two pieces of paper of equal width are crossed and overlapped. The overlapped part is a quadrilateral. Is ABCD a diamond? Is it a proof, not a reason
• 9. It is known that, as shown in the figure, the quadrilateral ABCD is a diamond, f is a point on AB, DF intersects AC with E
• 10. As shown in the figure, it is known that the quadrilateral ABCD is a diamond, f is the intersection of a point DF on AB, AC is on e, and it is proved that ∠ AFD = ∠ CBF
• 11. What is 15 times 20 divided by 1 / 30?
• 12. (- 29 and 18 / 17) * 36 calculation requires a simple method
• 13. 375 = () divided by 16 = (): 8 = ()% = () 9 / 10
• 14. Calculation: 76 × (123 − 153) + 23 × (153 + 176) − 53 × (123 − 176)=______ ．
• 15. How many hours and minutes is 10000 seconds?
• 16. 1 / 1 [1 times 2] + 1 / [2 times 3] + 1 / [3 times 4] + 1 / [4 times 5] + +How much is 1 / [2005 times 2006]
• 17. First simplify and then evaluate [[(x2 + 2x + 1) / (x + 2)] / [(x2-1) / (x-1)] - 1 / (x + 2), where x = √ 2-2
• 18. Why do the maximum and minimum temperatures on land and sea appear at different times
• 19. 2000 is a leap year______ (judge right or wrong)
• 20. Given that the point P is a point outside the circle C: x ^ 2 + y ^ 2 = 1, let K1 and K2 respectively pass through the slope of the two-day tangent of the circle C of point P. if the point P coordinates are (2,2), find the value of K1 * K2 I'm in a hurry