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°
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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°
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Verified answer
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