The value of 
.
The value of is 150°. ✅
We know that,
➡ 81° + 
= 180°
➡ = 180° -81°
➡ = 99°
Since an exterior angle of a triangle is equal to the sum of the two opposite interior angles, we have
= + 51°
Substituting the value of ''" in the above equation,
➪ = 99° + 51°
➪ = 150°
<u>Note</u>:-
Kindly refer to the attached file.
Answer:
Sine, cosine and tangent formulas are used in RIGHT triangles. So you have one 90 degree angle and two acute angles that add up to 90 degrees (they are complimentary). So the cosine of one angle would be the same as the sine of the compliment to that angle... and vice versa. To answer this question, sin 81 = cos 9, since 81 and 9 are the two acute angles of the triangle and they both add up to 90 degrees. "Cos 9" is the answer when you wish to write "sin 81" in terms of "cosine."
Please give me brainiest
Answer:
13 1/3. have a great day!! :D
Step-by-step explanation:
To solve the equation, you first need to multiply 8 by 3/5's reciprocal, which is 5/3. Reciprocal basically means to flip the fraction. By multiplying 8 by 5/3 you'll get 40/3, which you can simplify to 13 1/3.
The answer is -3 on apex:)
