Without using a calculator write down in degrees, where possible, the principal value of a) sin

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Without using a calculator write down in degrees, where possible, the principal value of

a) sin¹ 0 

b) sin¹ (−1)

c)

d)

e) cos¹ 1

f)


g) cos¹2

h) cos¹ (−1)

i) tan¹ 1

j) tan¹ 0

k)

l)

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