dabean423564
dabean423564
23-03-2018
Mathematics
contestada
sinθ=1/4, 0<θ<90; cosθ
Respuesta :
evgeniylevi
evgeniylevi
23-03-2018
Try this option:
1. rule: if θ∈(0;90°), then cosθ>0 and sinθ>0;
2. using the rule and sin²θ+cos²θ=1, ⇒ cosθ=√(1-sin²θ)=√15/4.
answer:
[tex] \frac{ \sqrt{15}}{4}.[/tex]
Answer Link
VER TODAS LAS RESPUESTAS ( 72+ )
Otras preguntas
how the united states government interacts with the world affects people across the globe. You will evaluate a specific U.S. foreign policy based on your analys
A collision at 30 mph will take any loose object in your car and give it the same force as if it were: A. Propelled by a slingshot. B. Thrown. C. Shot from a
Finding Derivatives Implicity In Exercise, find dy/dx implicity. ln xy + 5x = 30
(-5, 4); slope-3 So what is the answer
what is the distributive property of (x-4)(-2)
The ____________________ ____________________ ____________________ comprises an arid and semiarid region between the western mountains and the 100° meridian in
Which phrase gives a force scientists believe is responsible for tectonic plate motion?
Gerard has been offered a 4% interest rate on a $300,000 mortgage. His monthly mortgage payment would run about $950 per month. He plans to pay $2,000 up front
Which of the following best exemplifies the public opinion of Herbert Hoover during the presidential election of 1932? A. Voters waved "Hoover flags" when they
What is 5 tenths divided by 7 tenths
