Math, asked by sidd24472, 11 months ago

The value of the expression in pic is positive. (question 2)

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Answers

Answered by rani49035

2

Answer:

0

Step by step explanation

cos²23- sin²67.

we know

cos(90-∅) = sin∅

so

cos²23 = sin²67

Above question should be equal to

sin²67 - sin²67 = 0

hope this will help you.

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