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Popular >

simplify sin(a-90)

Solution

simplify

sin (a - 9 0^{\circ})

Solution

- cos (a)

Solution steps

sin (a - 9 0^{\circ})

Rewrite using trig identities

= - cos (a)

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Frequently Asked Questions (FAQ)

What is sin(a-90) ?
The solution to sin(a-90) is -cos(a)