Math, asked by krishdesai8274, 2 months ago

7cos²φ+3 sin²φ=3 then φ=? A) 0°,B) 30°,(C) 60°and (D) 90°​

Answers

Answered by rishabh994
1

Answer:

option (d) is correct...i.e. φ= 90°

Step-by-step explanation:

7 cos² 90° + 3 sin² 90°

7 × 0² + 3 × 1²

0 +3

3

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