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Find the values of: 

i. 5 sin 30° + 3 tan 45° 

ii. tan 60° + 3 sin 60° 

iii. 2 sin 30° + cos 0° + 3 sin 90° 

iv. tan 60°/(sin 60° + cos 60°)

v. cos 45° + sin 30° 

vi. cos 60° x cos 30° + sin 60° x sin 30°

1 Answer

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Best answer

i. sin 30° = (1/2) and tan 45° = 1

ii. (4/5) tan2 60° + 3 sin2 60°

iii. 2 sin 30° + cos 0° + 3 sin 90° 

2 sin 30° + cos 0° + 3 sin 90° 

= 2 (1/2) + 1 + 3(1) 

= 1 + 1 + 3 

∴ 2 sin 30° + cos 0° + 3 sin 90° = 5

iv. tan 60°/(sin 60° + cos 60°)

v. cos 45° + sin 30°

vi. cos 60° x cos 30° + sin 60° x sin 30°

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