Question

(cos Θ + cos Θ)^2 + (cos Θ + cos Θ)^2

Answer 1

@satellite73

Answer 2

@tkhunny

Answer 3

Why is this troubling? Are they ALL \(\cos(\theta)\)? Add them inside the parentheses and see what happens.

Answer 4

???

Answer 5

this is like
\[(a+a)^2+(a+a)^2\]

Answer 6

But the answers are:

sin^2 Θ

4

8cos^2 Θ

cos^2 Θ

Answer 7

you get
\[(2a)^2+(2a)^2=4a^2+4a^2=8a^2\]

Answer 8

Ohhh so C

Answer 9

ok
there is no trig in this
it is algebra only

Answer 10

What do you mean by that @satellite73