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1:19
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Classtheta
Use trig identities to find the exact value of (tan40 - tan10) / (1 + tan40 * tan10)
Use trig identities to find the exact value of (tan40 - tan10) / (1 + tan40 * tan10) We need to find the exact value of: (tan(40°) - tan(10°)) / (1 + tan(40°) * tan(10°)) This expression matches the formula for the tangent of a difference: tan(A - B) = (tan(A) - tan(B)) / (1 + tan(A) * tan(B)) In our case, A = 40° and B = 10°, so: (tan(40 ...
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