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Dafna11 [192]
3 years ago
5

Find cos x if sin x cot x = 0.5.

Mathematics
2 answers:
I am Lyosha [343]3 years ago
8 0

Answer:

Choice A is correct.

Step-by-step explanation:

We have given that:

sin x cot x = 0.5.

We have to find the value of cos x .

As we know that cot x is the ratio of cos x and sin x.

cot x = cos x / sin x.

We have,

sin x (cos x / sin x) = 0.5.

cos x = 0.5

cos x = 0.5 is the answer.

sergiy2304 [10]3 years ago
4 0

Answer:

Choice A

Step-by-step explanation:

We are given;

sinxcotx=0.5

but we know that;

cotx=\frac{1}{tanx}=\frac{cosx}{sinx}

Substituting the last expression in place cot x yields;

sinx*\frac{cosx}{sinx}=0.5\\ cosx=0.5

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<span>∫ (R)fdV = ∫∫∫ [θ=0,2π, r=0,3, z=0,9−r²] 5r²z.rdrdθdz </span>

<span>= 5∫∫ [θ=0,2π, r=0,3] ½r³{ (9−r²)² − 0 } drdθ </span>

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<span>= (5/2)∫ [θ=0,2π] { (81/4)3⁴− (3)3⁶+ (1/8)3⁸} dθ = 10935π/8 </span>

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