0 sin 2a = ? (formula with example) [sine of double angle] 0
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tan (a – b) = ? (formula with example) [tangent of difference]
+3 tan (a – b) = ? (formula with example) [tangent of difference] +3
Continue readingcos (a – b) = ? (formula with example) [cosine of difference]
0 cos (a – b) = ? (formula with example) [cosine of difference] 0
Continue readingsin (a – b) = ? (formula with example) [sine of difference]
0 sin (a – b) = ? (formula with example) [sine of difference] 0
Continue readingtan (a + b) = ? (formula with example) [tangent of sum]
0 tan (a + b) = ? (formula with example) [tangent of sum] 0
Continue readingcos (a + b) = ? (formula with example) [cosine of sum]
0 cos (a + b) = ? (formula with example) [cosine of sum] 0
Continue readingWhat is a right triangle?
0 A right triangle is a triangle that has a right angle. 0
Continue readingPitagora’s theorem (formula and picture)
0 In every right triangle, the square of the hypotenuse equals the sum of the squares of the legs. 0
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