Question

2. Evaluate :
(i) sin (90° - A) sin A -cos (90° - A) cos A
(ii) sind 35° - cos2 55°
cot 54°
tan 20°
+
- 2
tan 36°
cot 70°
2 tan 53°
cot 80°
(iv)
cot 37°
tan 10°
(v) cos? 25° - sin? 65° - tan2 45°
2
2.
sin 77°
(vi)
+
cos 77°
sin 130
- 2 cos2 45°
cos 13°
Shu that.​

Answer 1

Answer:

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