Question
Evaluate (exact answers):
a) sin^-1(cos30)
Need help. What do I do?
b) sin[(cos^-1((sqrt2)/(2)))+[(sin^-1((sqrt2)/(2)))]
= sin(45+45)
= sin90
= 1
Is this correct?
c) cos(arctan5/7)
= 7/(sqrt74)
= (7sqrt74)/74
Is this correct?
Please and Thank you!
a) sin^-1(cos30)
Need help. What do I do?
b) sin[(cos^-1((sqrt2)/(2)))+[(sin^-1((sqrt2)/(2)))]
= sin(45+45)
= sin90
= 1
Is this correct?
c) cos(arctan5/7)
= 7/(sqrt74)
= (7sqrt74)/74
Is this correct?
Please and Thank you!
Answers
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