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5. Given:
`a = 3 cm`
`b = 4 cm`
Find: `c, sinθ, conθ, tanθ, θ`
 `r^2 = x^2 +y^2`
`c = 5 cm`
`sinθ = 0.6`
`cosθ = 0.8`
`tanθ = 0.75`
`θ = 37°`
`c^2 = a^2 +b^2`
`=> c = sqrt(a^2 +b^2)`
`=> c = sqrt(3^2 + 4^2)`
`=> color(red)(c = 5 cm)`
`sinθ = a/c = 3/5 =0.6`
`cosθ = b/c = 4/5 = 0.8`
`tanθ = a/c = 3/4 = 0.75`
`θ = sin^(-1)(0.6) = 37°`
or
`θ = cos^(-1)(0.8) = 37°`
or
`θ = tan^(-1)(0.75) = 37°`
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