For approximately what values of x can you replace sin x by x - (x3/6) with an error of magnitude no greater than 5 * 10-4 ? Give reasons for your answer.

Q: Let sinA = 7/25 and sinB = -3/5 Solve sin(A+B)

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Q: 5

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Q: How did you choose pi/2, -pi/2 when setting it equal to 3 theta.

A: How did you choose : 3θ = π/2 and –π/2

Q: Find solutions when sin-1 (-1/2)

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Q: If sinA = 2.511x, cosA = 3.06x and sin2A = 3.969x, find the value of x.

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Q: If p = -1.4, simplify the expression tan (tan-(p)).

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Q: If tan x = 1, why sin x = sqrt(2)/2 instead of 1/sqrt(2)?

A: Given : tanx = 1

Fundamentals of Trigonometric Identities

Trigonometric Identities are the equalities that involve trigonometry functions and hold for all the values of variables given in the equation.