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In DeltaABC , angleA is right - angled ....

In `DeltaABC` , `angleA` is right - angled . If AB= 1 cm , AC =3 cm and BC = `sqrt(10)` cm , then find the values of cos B and sin C.

Text Solution

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Here, `cosB=("base")/("hypotenuse")=(AB)/(BC)=(1)/(sqrt(10))`
`and " " sinC=("perpendicular")/("hypotenuse")=(AB)/(BC)=(1)/(sqrt(10))`
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