Question

1.
If a vector P making angles a, b, and y
respectively with the X, Y and Z axes
respectively.
Then sin? a + sin? B+ sin² y =
(a) o
(b) 1
(c) 2
(d) 3​

Answer 1

Answer:

sorry can't understand

Explanation:

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Answer 2

Answer:

Option "c" (2) is the correct answer.

Explanation:

cos^2 α+cos^2 β+cos^2 γ=1

1−sin^2 α+1−sin^2 β+1−sin^2 γ=1

∴sin^2 α+sin^2 β+sin^2 γ

=2

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