Question

(iii) sin^2 30° – 2 cos^3 60° + 3 tan^4 45°
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Answer 1

Answer:

Step-by-step explanation:

Sin 30 = 1/2

Cos 60 = 1/2

Tan 45 = 1

Sin² 30* - 2cos³60 + 3tan*4 45

(1/2)² - 2(1/2)³ + 3(1)*4

1/4 - 2(1/8) + 3(1)

1/4 - 1/4 + 3

= 3

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Answer 2

sin ^2 30° - 2cos^3 60° + 3 tan^4 45°

= (1/2)^2 - 2 (1/2)^3 + 3 (1)^4

= 1/4 - 1/4 + 3

= 3.......