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`        express cosθ-sinθ as a cosine angleplease give me total solutionand also plz tell me why we have to divide and multiply with root2 `
29 days ago

Balwant Mittal
28 Points
```							Multiply and divided √2 (because it's value where angle of both sine and cosine are same so that we can make a formula of cos x cosy- sinx Sony)√2(1/√2 cosx- 1/√2 sinx)= √2( cos(45°+X) ( because cos a cosb - sin a sin b = cos(a+b))1/√2 =cos 45 = sin 45
```
29 days ago
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Course Features

• 31 Video Lectures
• Revision Notes
• Test paper with Video Solution
• Mind Map
• Study Planner
• NCERT Solutions
• Discussion Forum
• Previous Year Exam Questions