The solution of 3tan^2x-1=0 if x is in the first quadrant

the solution of 3tan^2x-1=0 if x is in the second quadrant is

In the first quadrant are solutions of the form

In the second quadrant are solutions of the form

Step-by-step explanation:

First, solve the equation This equation is equivalent to equation

The equation has the solution

The equation has the solution

In the first quadrant are solutions of the form

In the second quadrant are solutions of the form

36 girls

step-by-step explanation:

the 48 boys is 4 parts of the ratio

divide 48 by 4 to obtain one part of the ratio

= 12 ← 1 part of the ratio

3 parts = 3 × 12 = 36 ← number of girls

∠cbe and ∠deb are same-side interior angles.

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