Question

Convert to standard form: z = 20(cos135 + i sin135) @kittiwitti1

Answer 1

\(\color{#0cbb34}{\text{Originally Posted by}}\) @hoot007
Convert to standard form: z = 20(cos135 + i sin135) @kittiwitti1
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What's the reference angle for 135 degrees?

Answer 2

is the reference angle 45

Answer 3

\(\color{#0cbb34}{\text{Originally Posted by}}\) @hoot007
is the reference angle 45
\(\color{#0cbb34}{\text{End of Quote}}\)
Yup. And what quadrant is 135 in?

Answer 4

2

Answer 5

\(\color{#0cbb34}{\text{Originally Posted by}}\) @hoot007
2
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Mhm! So what sign do we stick on the sine and cosine functions, respectively?Recall the acronym "All Students Take Calculus":