Question

3 points
5. Evaluate : (i) sin 15° cos 75° + cos 15° sin 75. (ii) sin (90° - A) cos A + COS
(90° - A) sin A​

Answer 1

Step-by-step explanation:

Value of sin90 = 1

value of sin 60 = √3/2

Answer 2

Solution:

= cos 15 cos 75 - sin 15 sin 75

= cos (15 + 75) = cos 90 = 0

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