What is the value of 4(cos(45))+10(sec(45)) ?

The value of 4(cos(45))+10(sec(45)) is 12sqrt(2)

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4(cos(45))+10(sec(45))

4 (cos (4 5^{\circ})) + 10 (sec (4 5^{\circ}))

122

Solution steps

4 (cos (4 5^{\circ})) + 10 (sec (4 5^{\circ}))

= 4 cos (4 5^{\circ}) + 10 sec (4 5^{\circ})

Use the following trivial identity:

cos (4 5^{\circ}) = \frac{2}{2}

Use the following trivial identity:

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

= 4 \cdot \frac{2}{2} + 102

Simplify

4 \cdot \frac{2}{2} + 102 : 122

= 122

2 \cdot 0.48 \cdot sin (3 0^{\circ})

arccos (\frac{0}{80})

cos (311. 8^{\circ})

arcsin (\frac{8}{11})

7 sin (6 5^{\circ})

What is the value of 4(cos(45))+10(sec(45)) ?
The value of 4(cos(45))+10(sec(45)) is 12sqrt(2)