cos²67 - sin²80, evaluate it.
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Hey... I think the question is wrong dear...
It should be sin2 23
If it is so than here's the solution
Cos2 67 - sin2 23
= cos2 (90-23) - sin2 23
= sin2 23 - sin2 23
=0
Hope it helps you dear ☺️☺️
It should be sin2 23
If it is so than here's the solution
Cos2 67 - sin2 23
= cos2 (90-23) - sin2 23
= sin2 23 - sin2 23
=0
Hope it helps you dear ☺️☺️
deepu148:
oo thank you so much dear
my pleasure :)
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