HI, I drew & explained it below. I used the sine trig function to find the diagonal length and then used the pythagorean to find the missing length. Hope this helps :)

8 0

4 years ago

(1 - cosx) (1 + 1/cosx) = sinxtanx

Nataly [62]

Answer:

cos x ≠ 0 ⇔ x ≠ $\frac{pi}{2}+k.pi$ ; k ∈ N

$(1-cosx)(1+\frac{1}{cosx})=sinx.tanx\\\\(1-cosx)(\frac{cosx+1}{cosx})=sinx.\frac{sinx}{cosx}\\\\ \frac{1-cos^{2} x}{cosx} =\frac{sin^{2}x }{cosx}\\\\=>1-cos^{2}x=sin^{2}x$

<=> cos²x + sin²x = 1

⇔ 1 = 1

=> x = { R \ (pi/2 + k.pi); k ∈ N}

Step-by-step explanation:

5 0

3 years ago

Need now for study guide

likoan [24]

Answer:

17 cm.

Step-by-step explanation:

Because 12 cm + 5 cm. is 17 cm.

8 0

3 years ago

Find p(4) p(x) = 3x - 9<br>

never [62]

Answer:

p(4)=3

Step-by-step explanation:

p(4)=3(4)-9=12-9=3

3 0

3 years ago