Explore BrainMass

Explore BrainMass

    Exact value

    Not what you're looking for? Search our solutions OR ask your own Custom question.

    This content was COPIED from BrainMass.com - View the original, and get the already-completed solution here!

    Find the exact value by using a sum or difference identity. Which is the correct answer?
    cos 20 cos 25 - sin 20 sin 25 (angles are in degrees)
    1
    -√2/2
    √2/2
    √3/2

    © BrainMass Inc. brainmass.com December 24, 2021, 5:07 pm ad1c9bdddf
    https://brainmass.com/math/basic-calculus/exact-value-difference-identities-29182

    Solution Summary

    This shows how to find the exact value by using a sum or difference identity.

    $2.49

    ADVERTISEMENT