Math, asked by unnatiwaghela3531, 10 months ago

Evaluate: cos^2 25° + cos^2 65° − tan^2 45°

Answers

Answered by pmtibrahim18

6

cos2 25 + cos2 65 - tan2 45

we know that tan 45 is 1

cos2 ( 90 - 65 ) + cos2 65 - (1)2

sin2 65 + cos2 65 - 1

(sin2 theta + cos2 theta = 1)

1 - 1 = 0

therefore the value of the given question is 0

plz mark as brainliest

byee!

Answered by purvirajput

4

I hope this will help you

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