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What is the value of (cos2 …

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What is the value of (cos2 67°-sin2 23°)

Posted by Raman Singh 7 years, 8 months ago

CBSE > Class 10 > Mathematics

9 answers

Sundram Yadav 7 years, 8 months ago

0

Pankaj Gupta 7 years, 8 months ago

Maf kiya

Maunisha Mallan Mallan 7 years, 8 months ago

Sorry.. For some mistakes in answer.. Actually i didn't see the question properly =Cos 2 67°-sin2 23° =Cos(90-23)-sin2 23° =Sin2 23-sin2 23 =0

Pankaj Gupta 7 years, 8 months ago

Dk niche comments pado

Maunisha Mallan Mallan 7 years, 8 months ago

As we know.. Cos2 90°-A=sin A So cos267°=sin2 23° ...cos2 90-23= sin2 23 ....sin2 23°= sin2 23°which is equal to 1

Pankaj Gupta 7 years, 8 months ago

Really

Atif Khan 7 years, 8 months ago

0

Divyanshi Kumari 7 years, 8 months ago

Ya its 0

Darshanaa Yadav 7 years, 8 months ago

0

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