Ответ:
Объяснение:
∣∣d⃗ ∣∣=62√;|c⃗ |=6;d⃗ c⃗ ˆ=135°d⃗ ⋅c⃗ =62√⋅6⋅(−2√2)=−36
2.
∣∣b⃗ ∣∣=6⋅2√2;∣∣d⃗ ∣∣=6⋅2√2;b⃗ d⃗ ˆ=180°b⃗ ⋅d⃗ =6⋅2√2⋅6⋅2√2⋅(−1)=−72
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Ответ:
Объяснение:
∣∣d⃗ ∣∣=62√;|c⃗ |=6;d⃗ c⃗ ˆ=135°d⃗ ⋅c⃗ =62√⋅6⋅(−2√2)=−36
2.
∣∣b⃗ ∣∣=6⋅2√2;∣∣d⃗ ∣∣=6⋅2√2;b⃗ d⃗ ˆ=180°b⃗ ⋅d⃗ =6⋅2√2⋅6⋅2√2⋅(−1)=−72