Question

1. Evaluate the following :

(i) sin 60° cos 30° + sin 30° cos 60° (ii) 2 tan2

45° + cos2

30° – sin2

60°

(iii)

cos 45°

sec 30° + cosec 30° (iv) sin 30° + tan 45° – cosec 60°

sec 30° + cos 60° + cot 45°​

Answer 1

Answer:

sin 60° cos 30°+sin 30°+cos 60°

1

Step-by-step explanation:

sin 60° sin 60+ cos 60° cos 60°. ( by using identity)

sin^2 60° + cos ^2 60°=1