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Choose the correct option and justify your choice:

=

= 0

Hence, (D) is correct

Evaluate the following:

(i)

(ii)

(iii)

(iv)

(v)

Sin 2A = 2 sin A is true when A =

If and find A and B

State whether the following are true or false. Justify your answer

(i) Sin (A + B) = sin A + sin B

(ii) The value of sin θ increases as θ increases

(iii) The value of cos θ increases as θ increases.

(iv) Sin θ = cos θ for all values of θ.

(v) Cot A is not defined for A = 0°