Question

Evaluate the expression without using a calculator.\\ $\left(\sin\frac{\pi}{4}\cos\frac{\pi}{6} - \sin\frac{\pi}{6}\cos\frac{\pi}{4}\right)^2$

          Evaluate the expression without using a calculator.\\
$\left(\sin\frac{\pi}{4}\cos\frac{\pi}{6} - \sin\frac{\pi}{6}\cos\frac{\pi}{4}\right)^2$

Evaluate the expression without using a calculator.

(sin(π)/(4)cos(π)/(6) - sin(π)/(6)cos(π)/(4))^2

Added by Jose Luis S.

Introductory and Intermediate Algebra for College Students 4th

Robert Blitzer 4th Edition

Instant Answer

Solved by Expert Yuva S

Step 1

Now, we can use the identity sin^2x + cos^2x = 1 to rewrite this expression as (sin I)^2 (1 - sin^2I). Expanding this expression, we get (sin I)^2 - (sin I)^4. Show more…

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