If cos-b sin-4 and a sin-b cos-3- then a2-b2 is

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Range of Trigonometric Ratios from 0 to 90 Degrees

If cosθ+b sin...

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If a cosθ + b sinθ = 4 and a sinθ - b cosθ = 3, then a² + b² is

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a c o s θ + b s i n θ = 4

a s i n θ - b c o s θ = 3

a^{2} + b^{2} =

a cos θ + b sin θ = m a n d a sin θ - b cos θ = n, t h e n a^{2} + b^{2}

x = a cos θ + b sin θ

y = a sin θ - b cos θ

a^{2} + b^{2} = x^{2} + y^{2}

a cos θ + b sin θ = c

a sin θ - b cos θ = \pm \sqrt{a^{2} + b^{2} - c^{2}}

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