Math, asked by sanskriti746, 8 months ago

. Prove that
(a) cos^2 1° + sin^2 23° + sin^2 67° + cos^2 89° = 2

Answers

Answered by akibaftabsifmnil

2

Step-by-step explanation:

=COS^2 67°-SIN^2 23°

=COS^2 (90°–23°)-SIN^2 23°

=SIN^2 23°-SIN^2 23°

=0✓✓✓✓

Answered by Anonymous

34

Step-by-step explanation:

SEE THE ABOVE ATTACHMENT....

..✌

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