Step-by-step explanation:

Given that:-

sin² 30° - 2 cos³ 60° + 3 tan⁴ 45°

=>(1/2)² - 2 (1/2)³ + 3 (1)⁴

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

=>1/4 - 2/8+ 3

=> 1/4-1/4+3

=>0+3

=>3

sin²30°-2 cos³60°+3tan⁴45°=3

Answer:

sin²30°-2 cos³60°+3 tan⁴45°

(sin30°)²-2(cos60°)³+ 3 (tan45)⁴

(1/2)²-2(1/2)³+3(1)⁴

1/4-2×1/8+3

1/4-1/4+3

0+3

3

so the answer is 3

I hope it helps u