Question

4 sin² 30° + cos² 0° - 2 tan² 45° + 5​

Answer 1

Step-by-step explanation:

$4 { \sin(30) }^{2} + { \cos(0) }^{2} - 2 { \tan(45) }^{2} + 5 \\ = 4 \times { (\frac{1}{2} )}^{2} + {1}^{2} - 2( {1}^{2} ) + 5 \\ = 4 \times \frac{1}{4} + 1 - 2 + 5 \\ = 1 + 1 - 2 + 5 = 5$

Answer 2

Answer:

4sin(30)

2

+cos(0)

2

−2tan(45)

2

+5

=4×(

2

1

)

2

+1

2

−2(1

2

)+5

=4×

4

1

+1−2+5

=1+1−2+5=5

Step-by-step explanation:

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