4 1/5 should be your answer
cos(3x) = cos(2x+x)
= cos(2x) cos (x) -sin(2x)sin(x)
31 degrees, 31 degrees, 118 degrees
Step-by-step explanation:
Step 1 :
Let x be the measure of 2 angles of the given isosceles triangle with same measure
Let y be the measure of 3rd angle
So we have x + x + y = 180
Step 2 :
Given that the measure of 3rd angle of triangle is 25° more than three times the measure of either of the other two angles
So we have , y = 3 x + 25
Step 3:
Substituting for y in the first equation we have,
x + x + 3 x + 25 = 180
=> 5 x + 25 = 180
=> 5 x = 180-25 = 155
=> x = 155/5 = 31
Hence the 2 angles of the triangle are 31 degrees.
Step 4:
we have y = 3 x + 25
=> y = 3 * 31 + 25 = 118
Hence the 3rd angle of given triangle is 118 degrees
Answer:
q = 6
Step-by-step explanation:
3/5 = q/10
10 ÷ 5 = 2
3 × 2 = 6
3/5 = 6/10
Answer:
-54
Step-by-step explanation:
Substitute the numbers for the variables.
-(5)+7(-7)
=-5-49
=-54
