Math, asked by craftogamer, 1 month ago

Evaluate

1)4 cos² 35° + 4 cos²55°
2)5cot²67°-5sec²23°

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Answers

Answered by kumarpriyattam121

0

Answer:

1) 4cos²35 +4cos²55

4sin²(90-55)+4cos²55

4sin²55+4cos²55

4(sin²55+cos²55)

4×1= 4 answer

Step-by-step explanation:

since

sin²A+cos²A= 1

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