Mathematics · Trigonometry

The expression tan x + tan ytan x - tan y is equivalent to:

Verified Solution4 OptionsUpdated: October 2026👁️1 View

1tan(x + y)tan(x - y)
2sin(x - y)sin(x + y)
3tan(x - y)tan(x + y)
4sin(x + y)sin(x - y)✓

Correct answer

sin(x + y)sin(x - y)

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The expression tan x + tan ytan x - tan y is equivalent to:

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