<span> given that sin a= 4/5
cos a= √(1-sin²a)
= √(1-16/25)
= √(9/25)
= 3/5
sin b=5/13
cos b= √(1-sin²b)
= √(1-25/169)
= √(144/169)
= 12/13
sin(a+b)= sin a· cos b + cos a · sin b
= 4/5· 12/13 + 3/5· 5/13
= 48/65+15/65
= 63/65
hope it helps
</span>
Answer:
To calculate the circumference of a circle, multiply the diameter of the circle with π (pi). The circumference can also be calculated by multiplying 2×radius with pi (π=3.14).
Step-by-step explanation:
np (: pls mark brainleist
Answer:
The formula to find the third side of the triangle is 
Step-by-step explanation:
In order to find value of the third side without knowing any degree measurements, you need to know value of two sides. Variable 
, in this case, is a hypotenuse (the longest side of the triangle).
Given the figure, both triangles are congruent.
Using the Side Angle Side (SAS) theorem, we can say thath both triangles are congruent.
The Side Angle Side theorem states that if two sides and the included angle of one triangle are equal to two sides and the included angle of another triangle, both triangles are congruent.
Here have two given sides and the angles opposite each other(vertical angles) are congruent. Thus, both triangles are congruent.
ANSWER:
Yes
SAS
Answer:
Step-by-step explanation:
The first three surveys have similar results but the last one is significantly different from the others.
It indicates twice as greater number towards English and almost twice as smaller numbers against the Math and Science.
This is likely biased survey.
