Memorizing multiplication tables beyond 20 helps significantly in increasing your calculation speed for competitive exams like SSC, Bank PO, and CAT. Let's look at the multiplication tables for the numbers 26 and 37.
Mental Math Trick for 26: Multiply by 25 and add the number itself (e.g., 26 x 4 = (25x4)+4 = 104).
Magic of 37: 37 x 3 = 111, 37 x 6 = 222, 37 x 9 = 333.
| Multiplication | Result |
|---|---|
| 26 × 1 | 26 |
| 26 × 2 | 52 |
| 26 × 3 | 78 |
| 26 × 4 | 104 |
| 26 × 5 | 130 |
| 26 × 6 | 156 |
| 26 × 7 | 182 |
| 26 × 8 | 208 |
| 26 × 9 | 234 |
| 26 × 10 | 260 |
Fun Fact about 37: When you multiply 37 by multiples of 3 (3, 6, 9), you get repeating digits (111, 222, 333)!
| Multiplication | Result |
|---|---|
| 37 × 1 | 37 |
| 37 × 2 | 74 |
| 37 × 3 | 111 |
| 37 × 4 | 148 |
| 37 × 5 | 185 |
| 37 × 6 | 222 |
| 37 × 7 | 259 |
| 37 × 8 | 296 |
| 37 × 9 | 333 |
| 37 × 10 | 370 |
26 multiplied by 5 is 130.
37 multiplied by 3 is 111.
What is the Value of cos 37°?
cos 37° = 4/5 = 0.8 (standard approximation). Exact value: cos 37° ≈ 0.7986. Derived from the 3-4-5 right triangle. Used in physics problems.
cos3x Formula — 4cos³x − 3cosx
cos3x = 4cos³x − 3cosx is the triple angle formula. Also: sin3x = 3sinx − 4sin³x, tan3x formula. Full derivation and solved examples.
Evaluate: cos 45° / (sec 30° + cosec 30°)
Step-by-step solution for the standard trigonometry problem: cos 45 / (sec 30 + cosec 30). Learn how to rationalize the denominator.
What is the Value of Cos 53 Degrees?
Learn the exact mathematical value of Cos 53° (3/5). Understand the famous 3-4-5 magic right-angled triangle used constantly in physics and JEE exams.
What is the Value of Cos 53 Degrees?
Learn the exact fractional and decimal value of Cos 53°. Understand how to derive it easily using the famous 3-4-5 right-angled Pythagorean magic triangle.
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