Question

question see below

Answer 1

Where is the question...

Answer 2

\[(1+\sin \theta)(1-\sin \theta) \]
and the answer in the book is saying \[\cos^2 \theta\]

Answer 3

@whpalmer4 do i do this the some way i did last problem ?

Answer 4

\[(1+\sin\theta)(1-\sin\theta) = 1*1 - 1*\sin\theta + 1*\sin\theta -\sin\theta*\sin\theta = 1-\sin^2\theta \]\[\qquad =\cos^2\theta\]

Answer 5

so do i solve like i did last one using the \[\sin^2\theta +\cos^2\theta = 1 \]

Answer 6

got it :)