ailiealien
ailiealien
15-05-2016
Mathematics
contestada
can i know the steps to these questions?
Respuesta :
padawan
padawan
15-05-2016
1.
sin ( sin - cos ) + cos(sin + cos)
= sin^2 - sin cos + cos sin + cos^2
= sin^2 + cos^2 = 1
formula: sin^2 + cos^2 = 1
2.
tan a tan(90-a) + sin^2 + cos^2
= tan a tan(90-a) + 1
= tan a / tan a + 1 = 2
formula: sin^2 + cos^2 = 1
tan(90-a) = 1/tan(a)
Answer Link
VER TODAS LAS RESPUESTAS ( 31+ )
Otras preguntas
two ways in which parents can improve/incourage equal power relations
What was the written plan that James Madison and other Federalists support in 1787?
Environmental science includes the study of all of the following except: a. planets b. soil c. water d. atmosphere
what method did the Union use to stop most of the South cotton trade
Please give two examples of objects that use current electricity?
ASAP can someone help me think of a title for the question :Which water has the greatest and least amount of ph levels ?be creative.Thank you !!!!! :D (if you
Suppose you produce a camera that costs $50 to make. At a selling price of $45, you will _____. earn a profit just cover your costs lose money
detemina cordonatele geografice ale punctului de confluenta a riurilor tigru si eufrat va rog frumos repede si corect va dau 20 de puncte
_____ is a control mechanism that intensifies an earlier reaction. A sensory receptor An effector Negative feedback Positive feedback
compare the roles of national and provincial governments in the country's legislation
