What is the value of (cos^2 67^@-sin^2 2...

What is the value of `(cos^2 67^@-sin^2 23^@)`?

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X BOARD PREVIOUS YEAR PAPER ENGLISH|Exercise SECTION-C|5 Videos

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X BOARD PREVIOUS YEAR PAPER ENGLISH-X Boards-All Questions

Prove the following identity, where the angles involved are acute a...
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What is the value of (cos^2 67^@-sin^2 23^@)?
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Find the distance of point P(x,y) from the origin
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