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Which step is incorrect? Look at picture

Which step is incorrect? Look at picture
asked 172k views
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Which step is incorrect? Look at picture

Which step is incorrect? Look at picture-example-1
asked
User Ldg
by
8.1k points

2 Answers

3 votes

Answer: step 4 is incorrect

Explanation:

answered
User Haneen
by
7.7k points
3 votes

Answer:

step 4 is incorrect.

there must be;

cos(π/2-x)cos(y)-sin(π/2-x)siny

answered
User Bruno Farias
by
8.6k points
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