Thread: if cos (23)=P, without calculator, find in terms of P Tan (203).

1. if cos (23)=P, without calculator, find in terms of P Tan (203).

This is the question

if cos (23)=P, without calculator, find in terms of P Tan (203).

tan (180+23). But I dont know whats going to be the next step?

Im stuck with this

so im using this formula

tan(x+y)=tan180+tan23
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1-tan180tan23

2. $\tan(180+23)=\tan 23$ (180 is the period of tan)

$\tan 23=\frac{\sin 23}{\cos 23}=\frac{\sqrt{1-\cos^223}}{\cos 23}=\frac{\sqrt{1-P^2}}{P}$

3. thank u!

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if cos23 = p express without the use of a calculator the following in terms of p cos203°

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