Question

Can someone please give the detailed solution of the third question

Answer 1

Step-by-step explanation:

put the values of sin and cos from trigonometric table

(1)

0 + (1/2)^2 + (√3/2)^2 + 1

= 1/4 + 3/2 +1

= 7/2 + 1

= 9/2

(2)

1 + (√3/2)^2 + (1/2)^2 + 0

= 1+3/2+1/4

= 9/2

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