Question

30 points help !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! .

Answer 1

Answer:

a) a = 51°

b) b = 24°

Step-by-step explanation:

a) a + 90 + 39 = 180

a = 180 - 129

a = 51

b) 64 + 68 + 2b = 180

2b = 180 - 132

2b = 48

b = 24

Answer 2

Answer:

$\large \boxed{\mathrm{a=51}}$

$\large \boxed{\mathrm{b=24}}$

Step-by-step explanation:

Angles in a triangle add up to 180 degrees.

The first triangle has one right angle or 90 degrees angle.

$a+39+90=180$

Solve for a.

$a=180-39-90$

$a=51$

$2b+68+64=180$

Solve for b.

$2b=180-64-68$

$2b=48$

$b=24$