Question

1. If a, ß and y be the angles which a line makes with the
positive direction of coordinate axes, then
sin? a + sin? B+ sinay​

Answer 1

Answer:

${sin}^{2} \alpha + {sin}^{2} \beta + {sin}^{2} \gamma \\ 1 - {cos}^{2} \alpha + 1 - {cos}^{2} \beta + 1 - {cos}^{2} \gamma \\ = 3 -( {cos}^{2} \alpha + {cos}^{2} \beta + {cos}^{2} \gamma ) \\ = 3 - 1 \\ = 2$

Answer 2

Answer:

answer is 2......

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