You need to add the choices to this question thank you ^^
Step-by-step explanation:
The formula of sin 2A in terms of cotA is
Hope it will help :)❤
Answer:
x = 6
Step-by-step explanation:
Complementary angles = angles that add up to 90 degrees.
Therefore 8x - 30 + 5x + 42 = 90
13x + 12 = 90
Subtract 12 from both sides and then divide each side by 13.
x = 6