Question

if sin3A+cos2B=2 then Cos 2A +Sin 3B=?

Answer 1

Answer:

1/2

Step-by-step explanation:

Here,

sin 3A + cos 2B = 2

Let sin 3A = cos 2B = 1

We know that,

sin 90 = 1

Here,

sin 3A = 1

∴ 3A = 90

A = 90 ÷ 3 = 30

We get A = 30 here.

Let's find B.

We know that,

cos 0 = 1

Here,

cos 2B = 1

∴ 2B = 0

B = 0 ÷ 2 = 0

We get B = 0.

Now,

cos 2A + sin 3B

= cos 2 × 30 + sin 3 × 0

= cos 60 + sin 0

= 1/2 + 0

= 1/2

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