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Mathematics ECAT Pre Engineering Chapter 12 Trigonometric Functions and Identities Online Test
| Sr. # | Questions | Answers Choice |
|---|---|---|
| 1 | cos2a=______; | cos2 a-sin2 a 2cos2 a-1 1-2 sin2 a All of these |
| Sr. # | Questions | Answers Choice |
|---|---|---|
| 1 | cos2a=______; | cos2 a-sin2 a 2cos2 a-1 1-2 sin2 a All of these |
