What is the value of 3sin²20°-2tan²45+3sin²70°
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3sin²20°-2tan²45°+3sin²70°
3cos²(90°-20°)-2(1)+3sin²70°
3cos²70°+3sin²70°-2
3(cos²70°+sin²70°)-2
3(1)-2
3-2
1
hope this answer will help you.
3cos²(90°-20°)-2(1)+3sin²70°
3cos²70°+3sin²70°-2
3(cos²70°+sin²70°)-2
3(1)-2
3-2
1
hope this answer will help you.
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