Question

If Cot a= root 3 find sin 3 a + sin 2 a

Answer 1

Answer:

Given,

cotθ=31⇒cotθ=cot60o⇒θ=60o∴(2−sin2θ1−cos2θ)

Putting the value of θ we get,

=2−sin260o1−cos260o=2−(23)21−(21)2=2−431−41=48−344−1=45

Answer 2

Answer:

√3/2

Step-by-step explanation:

cot a=√3

we know that cot 60 =√3

a=60

sin 180 + sin 120

0+√3/2

=√3/2 ans

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