Find the exact value of the expression cos (-105)

2 answers:

8 0

Cos(-©) negative angle is cos(+©) angle cos(-105) =cos(105) 105 =180-75 cos(180-75)= - cos(75) - cos(75)= - 0.26

3 0

Cos(-105) = cos105 = cos(90+15) = cos90cos15 - sin90sin15 = 0.cos15 - 1.sin5 = 0 - sin15 = -sin15

You might be interested in

earnstyle [38]

Answer: 1/2, 4/8...

Step-by-step explanation: because the least factor is 1/2 so all the numbers and their multiplicity of 2.

7 0

4 years ago

kifflom [539]

X= 10

complementary angles= 90° so 90-50=40
40 ÷ 4= 10

7 0

3 years ago

miv72 [106K]

I’m pretty sure it will be the last one f(x)=(3x+1)(2x-5).

3 0

3 years ago

Dmitry_Shevchenko [17]

This is geometric with a common ratio of 3 (3/1 = 3 and 9/3 = 3 etc)
the formula for the nth term is
an = 3^(n-1)

3 0

3 years ago

Rufina [12.5K]

+12 is the integer.

Is that your question

3 0

3 years ago