natashaartem natashaartem

27-03-2020
Mathematics

contestada

What value of θ makes cosθ = sin40° a true statement?
A) 20°
B) 40°
C) 50°
D) 90°

HINT: Complementary angles

Respuesta :

Hrishii Hrishii

27-03-2020

Answer:

C) 50°

Step-by-step explanation:

[tex]cos \: \theta = sin \: 40 \degree \\ cos \: \theta = cos(90 \degree - \: 40 \degree) \\ cos \: \theta = cos \: 50 \degree \\ \implies \: \theta = 50 \degree \\ [/tex]

Answer Link

Otras preguntas

The graph represents this system of equations: A system of equations. 2 x plus y equals 3. 2 x minus 5 y equals 15. A coordinate grid with 2 lines. One line pas

(3x5)-1 expression word

True of False: The graph of a rational function R never intersects a vertical asymptote.

A 70 year-old female has a drooping left eyelid obstructing her vision and has consented to having the blepharoptosis repaired. A skin marking pencil was used t

The ticking watch is probably used to A) draw attention to the condemned man’s mortality. B) illustrate the mental deterioration of the condemned man. C) distra

Read this sentence. My doctor explained that a daily walk is healthy. Which of the following revises this sentence to include a prepositional phrase? 1. My doct

. A solid metallic cylinder of diameter 12 cm and height 15 cm is melted and recast into toys in the shape of a right circular cone mounted on a hemisphere as s

Please help with this question 20 points!! "Certain social classes changed in the transition from the Roman Republic to the Roman Empire." Which of these suppor

What is the central idea of this excerpt? The sun and stars are lovelier than jewels and shine just as bright. Even fine cloth is made from the thread of simpl

Solve |x| > -9. no solution all reals {x | x 9}