-
The value of cos 
π - θ 
cos 
π - ∅ 
-sin 
π - θ 
sin 
π - ∅ 
will be 4 4 4 4
-
- sin(θ – ∅)
- sin(θ + ∅)
- cos(θ – ∅)
- cos(θ + ∅)
- sin(θ – ∅)
Correct Option: B
Here,
| cos | ![]() | - θ | ![]() | cos | ![]() | - ∅ | ![]() | ||
| 4 | 4 |
| - sin | ![]() | - θ | ![]() | sin | ![]() | - ∅ | ![]() | = ? | ||
| 4 | 4 |
Let
| - θ = A | |
| 4 |
| - ∅ = B | |
| 4 |
| ⇒ cos | ![]() | - θ | ![]() | cos | ![]() | - ∅ | ![]() | ||
| 4 | 4 |
| - sin | ![]() | - θ | ![]() | sin | ![]() | - ∅ | ![]() | = ? | ||
| 4 | 4 |
| = cos | ![]() | - θ + | - ∅ | ![]() | ||
| 4 | 4 |
| = cos | ![]() | - θ - ∅ | ![]() | |
| 2 |
| = cos | ![]() | - (θ + ∅) | ![]() | |
| 2 |
= sin (θ + ∅)
| ∵ cos | ![]() | - θ | ![]() | = sinθ | |
| 2 |

