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Sin square 30 -cos square 60 |
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Answer» Answer: 0 Step-by-step explanation: sin and cos are COMPLEMENTARY RELATIONS, i.e sinθ = cos(90°-θ) So, we can say that sin30° = cos(90°-30°) = cos60° In the GIVEN expression, sin²30° - cos²60° = (sin30°)² - (cos60°)² = (sin30°)² - (sin30°)² =0 |
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