What is the value of 2sin(30)+sec^2(45)+1 ?

The value of 2sin(30)+sec^2(45)+1 is 4

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2sin(30)+sec^2(45)+1

2 sin (3 0^{\circ}) + sec^{2} (4 5^{\circ}) + 1

4

Solution steps

2 sin (3 0^{\circ}) + sec^{2} (4 5^{\circ}) + 1

Use the following trivial identity:

sin (3 0^{\circ}) = \frac{1}{2}

Use the following trivial identity:

sec (4 5^{\circ}) = 2

= 2 \cdot \frac{1}{2} + (2)^{2} + 1

Simplify

2 \cdot \frac{1}{2} + (2)^{2} + 1 : 4

= 4

arcsin (\frac{14}{20})

\frac{sin ( π ) - cos ( 4 ) ( π )}{6 ( π )}

arcsin (\frac{4}{20})

(7.4 \cdot 9.81 \cdot 3) \cdot sin (6 5^{\circ})

tan (2 5^{\circ}) \cdot (sin (2 5^{\circ}) \cdot 250 \cdot 9.78)

What is the value of 2sin(30)+sec^2(45)+1 ?
The value of 2sin(30)+sec^2(45)+1 is 4