Solution
prove
Solution
Solution steps
Manipulating left side
Rewrite using trig identities
Use the Angle Sum identity:
Simplify
Simplify
Use the following trivial identity:
periodicity table with cycle:
Multiply:
Simplify
Use the following trivial identity:
periodicity table with cycle:
Apply rule
We showed that the two sides could take the same form
Popular Examples
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Frequently Asked Questions (FAQ)
Is sin(pi/2+a)=cos(a) ?
The answer to whether sin(pi/2+a)=cos(a) is True