Question

find the value of following using reduction formulae
a). cos 14 degree
b). sin5π/2
c). sin(-16)
d). cos (-23)
e). tan 74 degree
f). sec 106 degree
g). cosec5π/2
h). sec7π/2


if you can please answer at least one please I will mark you as brainlist​

Answer 1

Answer:

i know only one

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Step-by-step explanation:

a) The value of cos 14 degrees can be calculated by constructing an angle of 14° with the x-axis, and then finding the coordinates of the corresponding point (0.9703, 0.2419) on the unit circle. The value of cos 14° is equal to the x-coordinate (0.9703). ∴ cos 14° = 0.9703.