Question

31Given that tand 3.457 where << find the values of sine and cose. If necessary, round to 32decimal places

Answer 1

cos θ = - 0.278

sin θ = - 0.961

Step-by-step explanation:

We use the relation that

`\tan \theta=\tan \pi+\theta`

Now, we evalaute the following using a calculator

`\theta=\tan ^(-1)3.457`
`\theta=1.2892141`
`\therefore\theta^(\prime)=\theta+\pi=4.430806765`

The above is the angle between pi and 3pi /2.

Now

`\cos 4.43086=-0.278`

and

`\sin 4.4308.6=-0.961`

which are our answers!