Question

Trigonometry, just the first one, will mark as brainliest if helpful

Answer 1

Answer:

a = -0.5

b = −1.73

c = −0.70

d = $-\frac{\sqrt{2} }{2}$ ≈ -0.70710678

Step-by-step explanation:

EXPLAIN Q(a):

sin(−30)

Use the property sin(−x)=−sin(x).

−sin(30)

Get the value of sin(30) from trigonometric values table.

-0.5